US2262473A

US2262473A - Templet

Info

Publication number: US2262473A
Application number: US229550A
Authority: US
Inventors: Alexander P Stewart
Original assignee: Individual
Current assignee: Individual
Priority date: 1938-09-12
Filing date: 1938-09-12
Publication date: 1941-11-11
Anticipated expiration: 1958-11-11

Description

. tion.

Patented Nov. 11 1941 2,262,475 1 p TEMB I ET- *i"nlexanderlfrstewart.DetroiLMichff 6, ApplicationSeptember 12,1938,SrialNo429550t' i 1 1 clain1.2 (Ci.90- 6 2 Myinvention relates manew' rld usefulimprovemen t iriatemplet adapted for use on profil-- ing or" duplicating machinesp A satisfactory method 7 of producing such templets is to j form the samefrom iapla'stic material and allow the material to harden. It has been-discovered, how- "everl that freduentlya sheet of metal is placed .over the templet and hammered into position.

In the formingor hammering operation the sheet of metal is bent around and hammered into close engagement with the edges. Experience has shown that frequently these edges become chipped because of the hammering operation.

. It is an object of the present invention to provide a reinforcement for themarginal edges of the templet so that injury of thegsame resulting from the hammering operation will not be effected, and it is an object of the present invention to provide a templet of this class having a reinforced metallic edge.

It is another object of the present invention to providea metallicreinforcement along the edge of the templetat the time the same is formed. i

Another object of the present invention is the provision of a templet having metallic edge reinforcing means anchored thereon and exposed toprovide a metallic marginal edge on the outer surface.

Another object of the invention is the provision of a templet of this class having a non-frangible marginal edgeon the outer surface.

Another object ofthe invention is the provision of a templet of this classwhich will be durable in structure, economical of manufactureand highly efficient in use.

Other objects will appear hereinafter.

The invention consists in the combination and.

arrangement of parts hereinafter described and claimed. l

Fig. j6 is a-perspectiveview illustrating the-arrangement of the reinforcing means.

Fig. -7 isa fragmentary sectional View showin a slightly modified form of the invention.

"Fig. 8 is a fragmentary side elevational View of the modified-formshownin Fig. '7.

As shown in the drawing,the templet comprises a body 9 formed from hardened plastic material. This body 9 is formed in a suitable moldconstructed to the desired shape. Suitable supporting legs IIJ serve to connect the body 9 with the frame ll which carries the attachment means l2.

A mold l3 in which the body 9 isformed is preferably constructed from plastic material which is allowed to harden, this plastic material being placed about a suitable pattern or form. After the mold is hardened the. body 9 is formed therein by depositing. over the inner surface thereof, when a female form is used, and over the outer surface thereof when amale form of mold is used, the proper amount of plastic material from which the body 9 is to be formed.

Prior to the depositing of thismaterial on the inner surface of the mold or form l3 there is secured on the edge space 25,0f the mold a suitable plate formed from cardboard or the like to provide an overhangingabutment ledge. This ledge projects inwardly from the inner face 26 of the mold or form when a female mold is used and projects outwardly from the outer face when The invention will betas understood by a reference to the accompanying drawing which forms a part of this specification, and in which, Fig. 1 is a side elevational View of the inven- Fig. 2 is a sectional view taken on line 2 -2 of Fig. 1.

Fig. 3 is a fragmentaryside elevational view of I the molds prior to thedeposit of the plastic materialtherein. 1

Fig. 4 is a sectional view taken on lined- 4. of

Fig. 3. l

Fig. 5 is a fragmentary sectional view showing a stage of the operation and formation.

a male form is used. The overhanging ledge portion M of theplate [4 extends beyond the face of the mold the distance equal to the thick ness of the body 9 to be formed. This plate [4 is generally formed from a plurality of small pieces so as to ,render it possible to follow the curves and indentations of the mold.

In carrying outthe invention the face of the mold and of the ledge portion I4 is covered with a suitable adhesive such as grease or the like. The metallic edge-forming members are located in position in contactwith the face of the mold and in contact with the inner face of the ledgeforming portion 14- ,the adhesive or grease serving as a means for retaining the reinforcing or metallic edge-forming members in position.

In Fig. 1 I have shown the metallic'edge formed from a plurality of bolts. These bolts l6 are arranged to extend alternately at right angles to each other. Thenuts on the bolts are contacted against the inner face 26 and the inner face of the ledge-forming portion I4. The nuts of the adjacent bolts are in contact with each other, thus forming a continuous metallic edge.

When the plastic material is placed in position the heads of the bolts as Well as the stems thereof are embedded in the concrete as shown clearly in Fig. 5. It is believed obvious that other types of reinforcing members may be used instead of a bolt with a nut threaded thereon. All that is required is that the metallic edge-forming members be sufiiciently small to permit their location continuously around curves and indentations.

In Fig. '7 and Fig. 8 I have shown a different type of metallic edge-forming members. In this form of structure the metallic edge portion is formed from a plurality of metallic plates having the angularly extended portions I9 and 20, these portions are flat and plate like and engage against the inner surface 26 of the mold and the inner surface of the ledge-forming portion [4' as previously described. Projecting outwardly from the juncture of these plates l 9 and 20 is the stem 2| having an anchor head 22 formed thereon.

When the metallic edge-forming members are placed in position, the plastic material forming the body 9 is then deposited tothe proper thickness. The plastic material is then permitted to harden thus embedding and securing the metallic edge-forming members in position.

In this way there is formed a templet body formed from plastic material having a reinforced and metal faced edge thus obviating the disadvantages referred to and providing the structure around which metallic sheets may be hammered and a structure which will not crack and chip off in its handling.

While I have illustrated and described the preferred form of construction, I do not wish to limit myself to the precise details of structure shown, but desire to avail myself of such variations and modifications as may come within the scope of the appended claim.

What I claim as new is:

A profiling machine templet of the class described, comprising: a contact body formed from hardened plastic material; a plurality of separate metallic stems each provided, at one of its ends, with a flat faced metallic head, said stems being imbedded in said body with one of the faces of said heads exposed and forming a continuation of one of the outer faces of said body, opposed faces of adjacent heads being in engagement with each other; means on the opposite ends of said stemsfor anchoring the same in said body; alternate stems in said body extending perpendicular to the extension of adjacent stems.

ALEXANDER P. STEWART.