US866358A - Printer's quoin. - Google Patents

Description

PATENTED SEPT. 1'7, 1907.

Nga. 866,358.

H. A. HEMPEL.

PRINIERS QUOIN.

APPLIoATIoN FILED JUNI: 10.1907.

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HENRY A. HEMPEL, OF BUFFALO, NEW YORK.

PRiN'rERs QUOIN.

Specification of Letters Patent.

Patented sept. i7, 1907.

Application filed .Tune 10,1907. Serial No. 378,123.

To all whom it may concern: k Be it known that I, HENRY A. I-IEMPEL, a citizen of the United States, residing at Builalo, in the county of Erie and State of New York, have invented a new and useful Improvement in Printers Quoins, of which the ollowing is a specification.

This invention relates to printers quoins of the class consisting of a metallic wedge adapted to bear with its inclined ace against the corresponding 'face of a companion quoin, the opposing quoins of a pair having gear racks with which a pinionkey is engaged for moving the quoins lengthwise on each other to tighten or release them.

The invention has particular reierence to quoins of this kind which are provided with locking means ior preventing the same from working loose or slipping on each other by the jarring of the printing press, especially when it is run at a high speed or when a form is required to be used in the press for an unusually long time.

The object of my invention is to provide such quoins with a reliable locking device which is inexpensive in construction and which in no way interferes with their ordinary use. i

In the accompanying drawings: Figure 1 is a side elevation of a pair o quoins embodying one form of the invention.v Fig. 2 is a iace view of one oi the quoins. Fig. 3 is a longitudinal section in line 3-3, Fig. 1. Fig. 4 is a transverse section in line 4-4, Fig. 3. Fig. 5 4is a fragmentary longitudinal section in line 5 5, Fig. 3. Fig. 6 is a view similar to Fig. 3, showing a modied construction of the locking device. Fig. 7 is a transverse section in line 7-7, Fig. 6.

Similar letters oi reference indicate corresponding parts throughout the several views.

A and B indicate a pair of quoins each provided on its face or inclined side with a central longitudinal rib c and at its large end with a head or lug D having a central guide-groove d which receives the rib of the companion quoin. As is customary in such quoins the lugs D project beyond the ribs e and the lug o each quoin bears against the inclined face of the opposing quoin. On opposite sides oi the ribs o are arranged the usual gear racks f with which the pinion-key, not shown, engages.

The groove d oi each quoin is provided in one of its walls with one or more locking teeth, faces o1' proj ections d1 which are adapted to interlock with corresponding teeth, aces or projections c1 formed on the opposing side of the rib of the companion quoin, as shown in Fig. 3, so as to prevent slipping of the quoins on each other when tightened in a form or chase. The grooves d are considerably wider than the thickness of the ribs c to allow the ribs to move laterally yinto and out of engagement with the locking teeth d1, and to receive springs g which tend constantly to press the ribs sidewise into engagement with said teeth. For this purpose, the spring q oi each quoin is arranged adjacent to the smooth or untoothed wall of the groove d, so that the spring is strained or deflected by the rib oi the oppos ing quoin upon moving the quoins lengthwise on each other in the direction in which they are tightened.

In the embodiment of the invention shown in Figs. l to 5, inclusive, each spring consists o1 a tapering blade or strip oi spring steel which is driven into an opening h, preferably oi cylindrical form, arranged in the large end of the quoin and extending from the back thereof'to the face of the lug D. This spring blade extends forwardly beyond the bottom of the groove, preferably ilush with the face of the lug D, as shown in Figs. 4 and 5, and this projecting portion of the spring is free to yield, while its rear portion is rigidly held in place by the engagement oi its edges with the wall of the opening h.

To facilitate the entrance o the front ends of the ribs between the springs g and the toothed walls oi the groove d, said ends are tapered or wedge-shaped and the springs are arranged obliquely or at an angle to the toothed walls, the edges of the springs which face the large ends oi the quoins being nearer said walls than their opposite edges, as shown in Fig. 3.

To obtain the best results, the locking projections d1 of each quoin are preierably in the form oi ratchet teeth with their abrupt sides facing the large end of the quoin, as shown in the drawings.

These locking devices, while permitting the quoins of a pair to be shifted lengthwise on each other in the customary manner for tightening or loosening them, hold the quoins against longitudinal displacement with suflicient security to prevent their slipping on each other under the jars or vibrations oi the printing press, thus reliably locking the type in the form or chase.

It is to be noted that the quoins of a pair may be identical in construction, as shown, rendering them interchangeable.

It is only necessary to arrange locking means on that side of each rib which faces the toothed wall of the groove of the companion quoin, but if desired, both sides of the rib may be toothed, as shown in the drawings.

If desired, other forms of springs or yielding holding devices may be employed :for forcing the toothed rib of each quoin ot' a pair laterally into engagement with the toothed wall oi the groove of the companion quoin. For example, in the modification shown in Figs. G and 7, each spring consists of an approximately U-shaped strip of spring steel arranged substantially parallel with the inclined face of the quoin. The shank or outer arm g1 of the spring is driven into a saw-keri in the face of the lug D1, while its inner arm is arranged in the groove of the lug and forms an elastic tongue which bears against the side of the rib of'a companion quoin in the same manner as the inst-described spring.

I claim as my invention:-

l. 'lhe combination of a pair of quoins, one having a longitudinal rib and the other a guide groove adapted to receive said rib, said rib and the wall of said groove having interlocking means, and yielding means arranged to press said rib later-ally against said wall, substantially as set forth.

2. The combination of a pair of quoins, one having a longitudinal rib and the other a guide groove adapted to receive said rib, said rib being provided on its side with means constructed to interlock with the opposing wall of said guide-groove, and a spring for pressing said rib laterally against said wall, substantially as set forth.

3. 'lhe combination of a pair ot quoins, each having a longitudinal rib and a lug having a guidegroove adapted to receive the rib of the other quoin, said ribs being provided ou their sides with locking faces and the walls of said groove having similar faces adapted to engage with those of the ribs, and springs arranged in said grooves and acting to press said ribs laterally into engagement with the locking faces ot the grooves, substantially as set forth.

4. A quoin provided on its face side with a longitudinal rib and a lug having a groove adapted to receive the rib of an opposing quoin, the rib and a wall of the groove having locking faces, and a spring located in said groove opposite the wall having said locking faces, and arranged to press the rib of an opposing quoin laterally against said wall, substantially as set forth.

The combination of a quoin provided on its face side with a longitudinal rib having locking teeth on its side, a lug having a groove adapted to receive the 'rib of an opposing quoin and an opening leading to said groove adjacent to one of its Walls, the opposite wall of the groove having loc-king teeth adapted to interlock with the toothed rib of an opposing quoin, and a spring located in said opening and extending into said groove, and arranged to press the rib of an opposing quoin laterally against said Wall, substantially as set forth.

6. The combination of a quoin provided on its face side with a longitudinal rib, a lug having a groove adapted to receive the rib of an opposing quoin and a cylindrical opening extending from the back of the quoin into said groove,

the rib and one of the walls of said groove having locking faces, .and a spring-blade driven into said opening and extending into said groove, substantially as set forth.

7. The combination of a quoin provided on its face side with a longitudinal rib, and a lug having a groove adapted to receive the rib of an opposing quoin, one et the walls of said groove having locking faces, and a spring extending into said groove opposite the \vall thereof having the-locking faces and arranged obliquely to said Wall, substantially as set forth.

S. The combination of a quoin provided on its face side with a longitudinal rib having a tapering front end and a lug having a groove adapted to receive the rib of an opposing quoin, one of the Walls of said groove having locking faces, and a spring extending into said groove opposite the wall thereof having the locking faces and arranged obliquely to said wall, substantially as set forth.

Witness my hand this 6th day of June, 1907.

HENRY A. HEMPEL.

Witnesses:

C. F. GEYER. E. M. GRAHAM.

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