US1335480A - Printer's quoin - Google Patents

Description

A. B. CARTY. PRI NTERS QUOIN.

APPLICATION FILED MAR. 6, 1919.

UNITED STATES PATENT OFFICE.

ALTON IB. CARTY, OF WASEINGTON, DISTRICT OF COLUMBI A.

PRINTER/S QUOIN.

Application filed March 6, 1919.

To aZZ whom it may concern Be it known that I, ALTON B. CARTY, a citizen of the United States, residing at \Vashington, in the District of Columbia, have invented certain new and-useful Improvement in Printers Quoins, of which the following is a specification.

My invention relates to improvements in printers quoins of the Hempel type which are used in pairs, and more especially to one of the quoin elements.

My invention relates further to locking means wherein said quoin elements are positively locked against loosening when in position in the furniture, and, further, to means whereby said quoins are held against separation, one from the other, in case of loosening when the locking means is no employed.

My invention has for its object the use of a cotter pin of standard construction as a key or locking pin thus reducing the cost of manufacturing a specially designed pm and facilitating ready replacement by users 1n case of loss.

A further object of my invention consists in the ability to expand the adjacent portions of the cotter pin and thereby increasing its locking properties in use.

A further object of my invention consists in the ease with which the cotter pin may be inserted or extracted from the quoin, the head of the cotter pin being always visible in the locked quoin. I

A further object of my invention consists in the provision of a locking pin receiving recess extending transversely of the head of the quoin and adapted to embrace the locking pin throughout its entire extremity, all

as will be hereinafter more fully described and claimed.

Figure 1 is a plan View of one form of my improved quoin.

Fig. 2 is a cross section on line 22 of Fig. 1, showing bifurcated locking pin inserted. V

Fig. 3 is a cross section on line 33 of Fig. 2, showing distortion of the bifurcated locking pin insuring positive locking of the elements.

F1 4. IS a )ers ective view of one of the 0 quoin elements showlng the pair of upi turned retaining shoulders.

Fig. 5 is a key used to impart longitudinal movement of the quoin elements in looking the quoin in the furniture.

Printers quoins of the Hempel type are Specification of Letters Patent. I

Patented Mar. 30, 1920.

Serial No. 281,042.

currence for the frequent and periodic vibratlons and ars to which such presses'are subjected for these cooperating elements to shift their relative positions and to permit a loosening of the grip on the adjoining press parts. \Vhere presses carry a body of type through an arc of movement out of the.

. horizontal plane, this in itself gives rise to the dislodgment of any locking means which may be used to hold the elements in proper position and which locking means may-have become, in the slightest degree, loose.

Applica-nts device serves the purpose of holding in adjusted position the elements of a printer's quoin regardless of vibration to which the apparatus may be subjected, and regardless of movement which would serve to dislodge an ordinary locking means.

It is the object of my invention to obviate all these objections and provide a quoin that will be simple in construction and thoroughly reliable inoperation.

The quoin elements are designated by the numerals 10 and 11, each being provided with the usual racks 12 and 13, between which the pinion of the key 14 is introduced for expanding or contracting the quoin elements by a partial turn in one direction or the other. The inclined faces of the quoin elements are each formed with centrally disposed rib members 15 and 16, the adjacent faces of which are formed with a series of corresponding semicircular notches or apertures in which a locking pin, to be described later. is adapted to be inserted. To keep the quoin elements evenly poised, one on the other, during use, the usual head portions 17 and 18 are formed'on one end of each quoin element. Each of the head portions is provided with a transverse elongated aperture 19 corresponding to onev of the series of segmental notches in the centrally disposed inclined rib through which the locking pin 20 is adapted to pass and in which the expanded end or type 23' of the pin 20 is adapted to be held against rotation during locking of the quoin elements.

The locking pin 20 is preferably of the cot ,20 is then inserted in either ol tcr pin construction, being formed of resilient metal and providing two adjacent semi circular portions 21 and 22, joined at one end in an expanded loop or end 23. A pair of shoulders 24 and 25 extend at right angles to the centrally disposedinclined ribs 15 and 16 at the outer extremity of each quoin element against which the head of the corresponding element is adapted to inn p1nge.- I

- The operation of the quoin is The quoin elements are placed, other, as in the llempel quoin,

as "follows: one on the and by engagement and rotation of the pinion oil the key 14 between the racks l2 and 13, are

contracted one on the other and wedged tightlyin-the 'lurniture. The locking pin the elongated apert'iilres 19 and a corresponding and regis tering semicircular notch in the centraltv disposed rib of the adjacent quoin element, the expanded head portion 23 ot the pin 20 closely fitting the aperture 19, thus preventing rotation thereoti during longitudinal dis iilz-icemcnt oi? the quoin eleimxnts, and

each of the quoin elements embracing porresponding notched portions of the quoin elements returned to registering position.

It will, be evident from the relation of the aperture 19 and the cooperating rib 1(3 that the cotter pin forms a locking member in which thc grip is continuousthroughoutthe greater part of the cotter pin and the distortional effect has been localized between the two members 21 and 22 of the cotter pin. As shown in Fig. 2 the cotter pin is in continuous engagement with the member 11 from the extremity of the member 22 to the bight portion 20. The walls of the aperture 19 serve at their innermost "juncture to closely grip the cotter pin. The bight by reason of the swelling portion is also gripped between the sides of the aperture 19. In this way rotational movement of the bightaround the member 22 is prevented. The outer portion of the side walls of the aperture 19, however,:permits the member 21 to be drawn out of linefrom the member In this Way the member 21 may be said to have a radial motion around member:

as a fulcrum and the entire distortional'eii feet becomes localized in the freemember '21.

During adjustment of the quoin in the furniture and also in case the locking pin 20 and are formed with inclined faces which are oi? such-angles aswill permit of the passage of the adjacent quoin element when pressure is applied by the action ot the pinion oi: the l l lbe'tween the racks 12 and 13 in either direction, alias willv be readily understood. 7 I 7 Having described my invention in :n-jn. what I claim as-new and desire to cover bv Letters Patent is:

1. A printers quoin comprising a pair oi? quoin elements, the eombi 1011 0? a b" cat-ed locking pin, said loc to extend transversely between the adjacent faces of said elements aiul adapted to be distorted by longitudinal displacement ct said elements 'i 2. In combination with a n'in'ters quoiu, locking means comprising a trans *erse distortable pin and means on said uoin for preventing rotation ot said pin,

3, In combination with a pair o tquoin elements formed with eoii'res ionding notches in their adjacent faces, a. biturchted pin adapted to extend transversely"therethrough and be distorted by longitudinal displadiment of said elements. 7

4-. A printers qnoin comprising-awedgeshaped membertermed with acentrally disposed rib and ahead at one end thereot. and a pair of upturned shoulders having sloping side faces arranged one on either side of said centrally disposed b adjacent the opposite end of said member. 7

'5. In a printcrs quoin, the combination of a pair of quoin elements, each connirising a wedge-shaped member formed with a central longitudinal rib, an upstanding head at one end, and a pair oi? transverse shoulders at the other end, said shoulders having slopingside faces. I

- In aprinters quoin, the combination of a pair of quoin elements, each provided with a centrally disposed rib portion and a head adjacent one end thereof, said rib portions provided with notches in their adja cent faces and said head port-ions provided with an elongated aperture adapted to resistcr with a notch of the opposing rib. and a locking pin adapted'to be inserted in said elongated aperture and the registering notch.

In testimony whereof I athx my signature.

ALTON B. CARTY.

king pin adapted

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