US1070794A - Pin. - Google Patents

Description

S. FISCHER.

PIN.

APPLICATION FILED MAR.17, 1911.

1,070,794; Patented Aug. 19, 191 3.

I 3440mm 35% Mwfiw COLUMBIA PLANQGRAPH co.,'\vAsH|Nc|ToN. D. c.

UNITED STATES PATENT OFFICE.

SIGMUND FISCHER, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO FISCHER AND PRUEFER, OF PROVIDENCE, RHODE ISLAND, A FIRM COMPRISING SIGMUND FISCHER AND WALTER H. FRUEFER, COPARTNERS.

PIN.

To all whom 2'15 may concern:

Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Pins, of which the following is a specification.

This invention has reference to pins, its object being to form a socket in the pintongue carrying plate to serve as a joint member for the reception of the pin-tongue head, said member to be of extremely simple, inexpensive, and practical construction, the same being also strong and durable and of neat and attractive appearance.

A further object of the invention is that this joint member should be formed by pressing up or outward the stock of the back plate into substantially an inverted cup shape or socket, forming a housing whose contour is rounding into oval or dome-shape with flattened sides, the same being adapted to entirely inclose the head or rotating portion of the pin stem, said contour serving as a bearing against which the outer portion of the pin-tongue head may rotate. This construction also lends great strength to the joint member.

Still a further object of the invention is to obviate the necessity and expense of providing and inserting a pintle on which to mount the pin-tongue. To accomplish this result in a simple and practical way I have provided one or more fingers formed integral with the back plate and adapted to be bent under to close or form a barrier at the mouth of the socket to retain the head of the pin-tongue therein, forming a rest for the outer surface of said head on which the same may be rotated. By this construction no openings need be formed in the side walls of the socket for the pivot or trunnion, thus leaving their surfaces perfectly plain and smooth, and adding to the beauty and neatness of appearance of this member.

I/Vith these and other objects in view, the invent-ion consists of certain novel features of construction, as will be more fully described and particularly pointed outin the appended claims.

In the accompanying drawings: Figure 1is an enlarged sectional side elevation of a pin showing my improved form of joint member. Fig. 2-shows a blank of a back Specification of Letters Patent.

Application filed March 17, 1911.

\ Patented Aug. 19,1913.

Serial No. 615,162.

f plate from which my improved joint mem- Be it known that I, SIGMUND ITISCHER,I3 citizen of the United States, and resldent of ber is struck up. Fig. 3is an enlarged sectional view .of the oint member as drawn or swaged up from the blank illustrated in Fig. 2. Fig. 4is a top plan view of the back plate and finished joint member. Fig. 5is a bot-tom plan view of the back plate with my improved joint member formed thereon and showing the retaining fingers bent into position to hold the pin-tongue head in the socket. Fig. 6-is a transverse section on line 66 of Fig. 1. Fig. 7is a modification illustrating the rearwardly projecting end of the joint member removed and the front plate rolled up against the lower edge of said joint member.

Referring to the drawings, 1 designates the front portion of the pin body and 2 the back plate or pin-tongue carrying plate thereof, around the edge of which back plate the edge of the front plate may be rolled to secure the two members together. This back plate is preferably cut from sheet stock into the desired shape the blank being a little longer than the front shell 1 into which it is to fit after the joint and catch are formed thereon. I/Vhile being blanked, this plate is provided with two pairs of ears 33 and L4t extending laterally from the side edges thereof, the stock between each pair being reduced as at 5, and a pair of outwardly projecting fingers 66 are shown as being formed on the outer edges of cars 4i. This reduced portion is then bent outwardly from the plane of the plate and the ears or wings bent and drawn inward until their edges 77 abut, said abutting edges being drawn so tightly together that when finished it is difiicultto find the joint, the finished socket having a rounded top portion 8 and rounding end walls 9, thus forming a substantially tight housing for completely incasing the head of the pin-tongue. The turning of these edges inward until they meet serves to prevent exposing the base metal of which the inner portion of the plate is formed when the back plate is made of plated metal, which is often the case. After the socket is formed, an elongated hole 5 is made through the wall thereof through which the pin-tongue is designed to extend. When the stock has been drawn up into the completed socket these fingers 66 naturally extend downward on either side thereof as illustrated in Fig. 8.

After the pin stem has been passed through the slot 10 and the head inserted into the socket these integral. fingers are bent over across the open mouth of the socket and beneath the circular headed pintongue, see Fig. 6, forming a barrier for the purpose of retaining the pin-tongue in said socket but permitting the head to freely rotate therein. I have described these fingers as formed on the outer edge of the back plate but fingers of any desired shape may be formed from any desired portion of the back plate and bent under the mouth of the socket to hold the pin-tongue head in position therein. By this construction the necessity and expense of providing and inserting a pintle through the side walls of the socket for the pin-tongue to turn on, is obviated leaving said side walls 11-1l pertectly plain and smooth, and said fingers being bent in from the underside are completely out of sight when the pin is assembled, thereby providing an extremely simple and very inexpensive yet effective means for securing the pin-tongue head in position in the socket. By my improved construction this joint member is termed a little narrower than the back plate on which it is constructed for two reasons, first, the front plate is permitted to be rolled continuously or uninterruptedly around this joint member, as illustrated by the dotted lines in Fig. 4. Another reason for forming the housing of this oint member narrower than that of its plate is so that its side walls 1l--1l will engage and support the loop or pivoting portion of the pin-tongue from lateral motion.

It is found in practice that by forming the outer peripheral walls of this member with a circular contour lends to the housing greatstrength and resists its tendency to open as the pin stem is pressed to its closed position over the fulcrum point at 12. Then again, this form makes a convenient bearing for the head out a pin-tongue bent into a substantially ring "term like that illustrated in Figs. 1 and 7, particularly when the same is held to receive its bearing on its periphery as in the present case.

Fig. 7illustrates a modification in which the outwardly extending end portion 13 is removed and the roll of the front plate extends close up against the rear wall of the joint.

By constructing the pin-tonglie-carryingplate of a strip of metal which is folded into a loop form at a point intermediate its ends, the portion of the plate which forms the socket member of the joint is not materially reduced in thickness during the operation of making it as would be the case it the socket were drawn or punched in a :tlat plate having edge portions remaining in the same plane as the rest of the plate. In the present structure the edge portions of the strip are closed in toward each other so as to term the sides of the socket loops, resulting in the socket member of the joint being somewhat dome-shaped with flattened sides, the inner surface of which guide the fiat sides of the coiled end of the pin-tongue when a pintongue substantially of the type illustrated is employed.

I claim:

1. As an improvement in pins, a back plate provided with a portion adjacent one end bent outward from the plane of the plate forming a pin tongue head receiving socket, the same having inclosing side walls each formed of two folded portions having opposite abutting edges, said side walls being substantially fiat and parallel with the longitudinal axis of said plate, said socket being formed with an open base and a top retaining wall with a slot therein for the passage of a pin-tongue.

2. As an improvement in pins, a back plate provided with a portion adjacent one end bent outward from the plane of the plate forming a pin-tongue head receiving socket, the same having inclosing side walls each formed of two portions drawn and bent over and toward each other until their 0pposite edges abut, said side walls being substantially flat and substantially parallel with the longitudinal axis of said plate, said socket being open at its bottom and having a top retaining wall, with a slot therein for the passage of a pin-tongue body, said side wall being provided with integral fingers readily bendable across said bottom opening to hold the pin-tongue head in the socket.

In testimony whereof I atfix my signature in presence of two witnesses.

SIGMUND FISCHER.

\Vitnesses HOWARD E. BARLOW, E. I. OGDEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of lliatents, Washington, D. G.

Images