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Title:
Insulating handgrip
United States Patent 2126201
Abstract:
My invention relates to handles for tools, for stove and furnace doors, etc.; an object being in my device to provide a means for effectively insulating the handgrip for such tools, door handles and the like from the heat that is commonly conducted back to the handle when a tool or door handle...


Inventors:
Mccall, Arthur B.
Application Number:
US12033337A
Publication Date:
08/09/1938
Filing Date:
01/13/1937
Assignee:
Mccall, Arthur B.
Primary Class:
Other Classes:
126/9B, 267/33, 294/12
International Classes:
F24C15/02
View Patent Images:
Description:

My invention relates to handles for tools, for stove and furnace doors, etc.; an object being in my device to provide a means for effectively insulating the handgrip for such tools, door handles and the like from the heat that is commonly conducted back to the handle when a tool or door handle is used about a hot stove, from excessively cold contact with tool handles in winter and from electric shock.

A purpose of my invention is to provide an insulation covering for handgrips of such tools and handles and to provide the same as a result of a process of my own invention, for which I have taken steps to secure patent protection and 1d by which I dip or spray or otherwise apply an insulation coating to the handgrip of such tools and handles.

A particular feature and merit of my invention and one which makes my purpose more effective is found in the fact that this novel article may be represented in its most efficient form in a stove tool, such as a stove poker or a lid lifter which is provided with a coiled wire handgrip about one end thereof, the arrangement of the wire coils on the handle and of the tool body being such as will cause the wire coils to engage the tool shank at the terminal end and at the forward end of the coil handgrip with the intermediate coils spaced from the tool shank as they encompass the same. This arrangement of the handgrip when dipped into an insulating material of fluent consistency or sprayed therewith, permits all surfaces of the wire coils to be thoroughly covered and encompassed by a coating of the insulation material and also permits the shank or that portion of the tool or door handle, which is encompassed by the wire coils of the handgrip to be thoroughly and completely covered and encompassed by a coating of the insulation material at the same time that the wire coils are each completely coated by that material.

It is obvious that in addition to wire handgrips, a solid metallic handgrip and other styles of handgrips for tools, handles and the like may be also provided with an insulation coating of any one of several known insulation materials, such as rubber, glycerol phthalate, Bakelite.

Thus, as a novel feature of my invention, I achieve the purpose of an effective double insulation of heat from one's hand when gripping the wire coils when thus covered by a coating of insulation material.

In this invention, I propose as a novel feature thereof, to provide handgrips for tool and door handles of wood, metal, fibre, wire and other suitable handle materials and to provide for such handgrips, a comfortable coating of insulating material while the material is yet in a fluid consistency. A particular purpose of my invention is to provide in connection with handgrips for tools, stove door handles and the like, an article wherein the wire coil handgrip engages its supporting shank by both ends of the coil and when such a wire coil handgrip is dipped or sprayed, then the supporting shank itself will be completely encompassed by a coating of the insulating material as well as to have each coil of the wire closely and tightly encompassed and gripped by the coating of insulation, the effect of which is to provide a double insulation from heat for the hand when gripping the handle. By a similar effect, it is obvious that wire drop handles for stove doors can be effectively insulated in like manner while cast iron handgrips and other metallic forms of handgrips will obviously fall within the scope of my invention when substantially coated by a suitable insulation material.

I attain the purposes of my invention by the invention described in the annexed specification, recited in the claims, and illustrated in the accompanying drawing wherein like reference numerals indicate like parts in the several figures.

Referring to the figures: Fig. 1 is a perspective of a lid lifter for stoves disclosing a coiled wire handgrip thereon as when covered with a coating of rubber.

Fig. 2 is a perspective of a stove poker, the handgrip of which is formed of coiled wire covered with a coating of rubber.

Fig. 3 is a cut-a-way detail of a handgrip portion of one of the stove tools and showing some of the insulation cover cut-a-way from the coils of the handgrip, and from a portion of that part of the tool body which is encompassed by the wire coils of the handgrip.

Fig. 4 is a perspective of one of the forms of stove tools not utilizing wire coils for the handgrip but very effectively utilizing a coating of I rubber encompassing the handgrip portion thereof.

Fig. 5 is a perspective of a drop handle wire handgrip for stove doors with my novel improvement. Fig. 6 is a perspective of a lever handle turn key for stove doors on which the handgrip portion is formed of coiled wire provided with my insulation cover improvement.

Fig. 7 is a perspective of a wire coiled knob provided with my insulation cover improvement.

Fig. 8 is a perspective of a stamped type of stove knob provided with my insulation improvement.

Fig. 9 shows a damper handle with my improvement.

Fig. 10 is a perspective of a wire coil alone and provided with my insulation coating improvement and prepared for use with tools, about stoves, furnaces and the like, as a damper handgrip, oven door handgrip or stove closet door handle grips.

Fig. 11 is an enlarged cross sectional view taken through one of the insulation covered wire coil handgrips of my invention.

Referring now to the salient features of my invention and pointing out the reason for the peculiar efficiency, thereof I provide, for instance, a lid lifter I, the shank end 2 of the body of which is fitted with a coiled wire handgrip 3, engaging shank end 2 at the terminal 4 thereof and at the forward end 5 of the handgrip with those wire coils intermediate the ends encompassing but spaced from the shank end 2.

I have found that an insulation covering and especially rubber insulation, for the wire coils and also for the shank end 2 of the body of the stove lifter provides a very effective insulation from excessive heat for one's hand when handling the lifter by the wire coiled handgrip.

It would be decidedly impractical and perhaps impossible to, in any manner, mold an insulation coating either on such wire coils or this shank ,35 end 2 of the stove lifter body and thus accomplish the purposes of my invention.

I have found it very effective, comparatively economical and a very simple manufacturing operation, merely to dip the handgrip with its coils of wire and shank end 2 of the lid lifter into a bath of rubber latex of desired fluent consistency or to spray such latex thereon by means of an air brush or the like, although it is obvious that other insulation materials could be likewise handled. Thus, for instance, when dipping the shank end of the lifter into the fluid insulation material, all surfaces of the wire coil, as well as the surface of the shank end of the lifter, encompassed by the wire coils, are effectively and completely covered by a tenaciously clinging coat of the insulation material of whatever consistency may be desired.

As a result of this dipping or spraying operation, I am able to secure a novel protection of my invention, which has been found to be most effective as an insulated handgrip for such stove tools.

In fact, by this arrangement I am able to secure a double insulation for the hand from excessive heat for the reason that heat that is conducted from the forward tongue end 6 which contacts the hot stove, back through the shank end 2 of the body of the lifter I and this shank end, by being covered with a coating of the insulation material, is first insulated by such a coating from throwing out an excessive volume of heat toward the hand; through the space between the coils of wire, while the coiled handgrip 3 is provided with an insulation coating inside and- out, O7 throughout the length of the wire coils and this insulation coating provides an effective protection for the hand that holds the wire handgrip which surrounds the shank end 2 of the lifter body.

In this way, I secure a double insulation from excessive heat from the hand that holds the stove lid lifter.

It is obvious that the insulation coating 7 for the wire coils and the insulation coating 8 for the shank end 2 of the lifter can be colored to suit the taste and the very nature of the operation which produces my invention, makes a handgrip that is attractive in appearance, with its other merits above mentioned.

The stove poker 9 shown in Fig. 2, with the coiled wire handgrip 10 covered by a coating II of insulation material encompassing the shank end 12 of the poker which is also covered by a coating of insulation material, is merely another adaptation of my invention, wherein I secure a very effective double insulation for the hand grip as pointed out above in connection with the description of the lid lifter I. Insulating materials 11 terminate on handle end 12 of shank 9 at point 29. :':The insulation -coating 13 about the wire coils of the turn key (see Fig. 3) and insulating coating 14 about the shank are relied upon to secure the effective double insulation against excessive heat for the hand when holding the turn key. Referring to Fig. 4, it will be noted that, for instance, a solid type of stove lifter 15 with the handle end 16 shaped to provide a suitable handgrip, is effectively insulated also by a coating 17 of insulation material, adapted to protect the hand when handling this lid lifter.

It will be noted in Fig. 5 that I provide a wire handgrip 18 of the drop handle type, provided with a soft insulation covering 19 and adapted to be used on stove doors and the like, where the insulation covering provides a substantial protection for the hand from excessive heat about the stove.

It will be noted also that in Fig. 6, I am providing a lever handle type of stove door handle ,!o 20 having a coiled wire handgrip 21 coated with an insulation material 22 for the protection of the hand from excessive heat. This type of handle has a shank portion 23 on which the coiled wire handgrip 21 is wound so as to be spaced 4 therefrom except at the ends and this shank portion 23 of the handle 20, in the meantime, is completely covered by an insulation coating in my invention, which it gets during the dipping or spraying operation and has the effect of providing a double insulation from the heat for the hand that holds the handgrip, thus providing a most practical means for the protection of the hand from heat when manipulating the stove door. It will be noted in Fig. 7 that an additional adaptation of my improvements in handgrips provides an insulation covering 24 and a wire coil knob 25 adapted to be used on stove doors and the like; while in Fig. 8 there is a perspec- 00 tive of a stamped type of stove knob 26 provided with a coating of insulation material 27. Damper handle 30 has an insulation coating for the protection of the hand. In Fig. 10 I am showing a wire coil 31 alone shaped in a form adapted to be used as a handgrip coil on tools, stove door handles, damper handles, oven and closet door handles and-the like.

This wire coil may be dipped or sprayed with an insulation coating and afterward, fitted into operative position where it is to be used.

In a study of my invention, it will be obvious that any one of a number of insulation materials may be used with any desired color to accomplish the purposes of my invention; while I have found it to be decidedly effective to use rubber for my purposes and in the use of rubber, I have found that my purposes are satisfactorily accomplished by dipping the article to be covered, into a bath of rubber latex of fluid consistency, which, if desired, is prepared with any suitable coloring.

After the coating has been applied, when rubber is used, the latex is then permitted to dry, or is vulcanized after which treatment, the coating becomes soft, resilient, tough, and tenaciously grips itself about the materials, which it coats.

Thus, for instance, where rubber is used, rubber is not necessarily vulcanized to the metal but may be dried or vulcanized around it, in which situation, the rubber clings to itself around the surface it covers, forming a tough and substantial coating as a soft insulating handgrip for the protection of the hand against excessive heat or cold.

In the preparation of these stove tools, door handles and their handgrips covered with an insulation material, it will be noted that where rubber is used as the insulation material, then after the dipping and vulcanizing operation, the same may be dipped into powdered soapstone, if desired, making the handgrip surface of the rubber smooth, soft and comfortable to handle, although this is not necessary.

Having thus described the nature of my invention, what I claim is: 1. A coiled wire handgrip for tools, handles, cranks, knobs and the like, a shank therefor about which the coils are wound, said shank and grip provided with a soft, resilient, cushioning coat of insulating material, completely encompassing each coil thereof, and also completely coating the shank.

2. A stove tool, having a coiled wire handgrip wound about a shank thereon provided with a coating of relatively soft, resilient, rubber completely encompassing the wire, defining the coils and also encompassing the shank of the tool within the coils of wire forming the handgrip.

3. A drop handle wire handgrip for stove doors providing in integral combination a central wire shank terminating at its free end in a shape to define a hook and a coiled handgrip portion shaped to define a series of wire coils, concentrically spaced from and encompassing said shank; said drop handle having a major portion of its central shank and each of its wire coils completely encompassed by a soft resilient cushioning coat of insulating material tightly gripping the same.

4. A handle, comprising a shank, a coiled handgrip, extending around said shank and anchored thereto, and an integral insulating material entirely encasing each coil of said handgrip and tightly encasing said shank to which the coiled handgrip is anchored; said shank being in spaced relation to the convolutions of the coiled handgrip.

5. In a stove tool, such as a lid lifter, a poker, a hook and the like, a handle comprising a shank, a coiled handgrip, extending around said shank and anchored thereto and an integral coat of insulating material entirely encasing each coil of the wire handgrip and tightly gripping the same and also encasing and tightly gripping said shank, said stove tool shank being in spaced relation to the convolutions of the coiled wire handgrip.

6. As a new article of manufacture, a wire coil shaped to define a handgrip and provided with an integral, soft, resilient cushioning coat of insulating material which entirely encases each coil thereof; said coil with its insulation coating adapted to provide a handgrip for tools, stove door handles, door knobs, damper handles, lid lifters and stove pokers and the like when secured into operative position for such use. 7. A coiled handgrip for tools, handles, cranks, knobs and the like, provided with a hand protecting coat of insulating material, completely encompassing each coil thereof.

8. A handle comprising a coiled wire handgrip surrounding a supporting shank and an insulating covering tenaciously gripping each of the individual convolutions of the coil of the handle and the shank.

ARTHUR B. McCALL.