US380182A - campbell - Google Patents

Description

(ANoMo'del.) I A @Sheets-sheet 1. C. H. CAMPBELL.

, GUSEIONING DEVICE PoR TYPE BEDS. No. 380,182. Patented Mar. 27, 1888.

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0. H. CAMPBELL.'v .GUSHIONING DEVICE PQR' TYPE 13mm;v No4-380,182. Patented Mar. 27, 1888.`

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UNITED STATES PATENT Chinon;y

oHARLEs H. CAMPBELL, on wATERTowN, NEW YORK.

CSHIONING DEVICE FOR TYPE-BEDS.

SPECIFICATION forming part of Letters Patent No. 380,182, dated March 27, 1888.A

Application iiled J une 15, 1887.

To all whom/it may concern/.- y

Be it known that I, CHARLES H. CAMPBELL, of Watertown, in the countyv of Jefferson, in the State of New York, have invented new and useful Improvements in Cushioning Devices for Type-Beds, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to the class of cylinder-presses which have a reciprocating typebed under the impression-cylinder. In this class of printing-presses it is necessary to provide suitable means for overcoming the momentum of the type-bed at the end of its stroke and assisting the actuating mechanism of the press in starting'the type-bed` in its retrograde For this purpose there are usually employed cushions or springs of different kinds, which in some instances consist of a piston moving under the resistance 'of compressed air in a cylinder, and in other cases the springs are of the form of helical wire coils which resist the movement of pivoted arms arranged to receive the impact of the type-bed at the end of the stroke thereof. It is this latter species of type-bed cushioning and repelling devices to which my present invention pertains. Y

The invention consists in improved devices for readily releasing the type bed from the force of the repelling-sprin g when it is required to turn the press mechanism 4over either center by hand, all as hereinafter more fully described, and specifically set forth in the claims.

. In the annexed drawings, Figures l and 2 are side views taken immediately at the side of the repelling-arm of a type-bed cushioning and repelling device embodying my improvef ments and showing the same in two of its operative positions. Fig. 3 is an end view of the same. Fig. 4 shows the repelling-arm released from the force of the main resistingsprings. Fig. 5' is an inner side lView of the Y lcoupling portion of the repelling-arm. Fig.

6 isa detached plan view of the main resisting-springs; and Fig. 7 is a transverse section on line w w, Fig. 4.

Similar letters of reference indicate corre- Sponding parts.

Serial No. 241,336. (No model.)

vwhich may-be driven in any suitable or wellthe sides thereof. The upper end of each ofi vsaid arms has pivoted to it the roller t,vvhich, during the approachl of the type-bed B to the end of its stroke, runs onto one of the usual shoes, s, which project from the end of the :type-bed, as shown in Figs. l'and 2 of the At the side of the arm C, l place a lever, D, pivoted to the shaft g, and connected with the cross-stay F ofthe press frame by a springcoupling, l,consisting of rods b b, each connected at one end to the cross-stay F and extending througll a yoke, c, and having a yoke, c', secured to theirfree ends, and a rod, b', connected at one end to the lever D above thev pivot thereof, and extending through the yoke c and secured to the yoke c between the rods b b, and springs d d d are interposed between4 the said yokes, as illustrated in Fig. 6 of thedrawings.

In an eye extending transversely through the arm' C is journaled a stud-pin, fi, to the ends of which and respectively at opposite sides of the arm are rigidly secured the dog f and the latch Z. a shoulder, a, and an abutment, n, which latter is adapted to support the arm C When in its normal position, as shown in Fig. 1 of the drawings, and the shoulder a is in such 'a position and the dogfofsuch a shape and length as to allow said dog to drop into engagement with the said shoulder when the arm C rests against the abutment n, and thus the arm and 'lever are looked together to act as if formed in one piece and receive jointly the force of the spring-couplingl I, which draws the lever D, with the arm C locked thereon, toward the end of the` type-bed B, and a prop, L, secured to the base of the press-frame and encountered by the lever D in itsaforesaid movement, serves to support said lever and arm in their normal position.

To the arm C is connected a rod, r, the free Th'e lever D is provided with,

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end of which slides through a bar, u, rigidly secured to the press-frame, and on this bar is mounted a spiral spring, e, which is compressed between the bar u and the coupling of 5 the rod r on the arm C, and serves to normally hold the said arm resting against the abutment n on the lever D, and consequently the dog f is normally in engagement with the shoulder a and the arm and lever normally ro locked together.

In the approach of the type-bed B to the end of its stroke the shoe s engages the roller t and crowds back the arm C in opposition to the resistance of the spring-coupling I, and this resistance overcomes the momentum of the type-bed B and assists the same in its reverse movement. When lit is desired to move the press mechanism over the center by hand, the

l repelling-'arm C can be liberated from the resistance of the spring-couplin g I by raising the latch l, which throws the dog f out of engagement with the shouldera of the leverD. The

arm C is then comparatively free to swing back and forth. The only resistance to be overcome in its movement in one direction is that received from the spring e, and this is insignificant, it being merely sufficient to throw the arm C onto the abutment u of the lever D when thetype-bed is moved away from the roller t of the said arm.

Along the side ofthe press-.frame A,I extend a shaft, O, journaled in suitable bearings secured to said frame, and to this shaft I attach an arm, P, which reaches with its free end under the latch Z, and is provided with a vertical chambered sleeve, P, in which is fitted to slide a pin, o, which is supported with its head normally above the top 'of the sleeve by means of a spiral spring seated in the chamber of the sleeve.

By turning the shaft O the free end of the arm P is raised,so as to cause the pin o to lift the latch l and thusthrow the dogfout of engagement with the shoulder a of the lever D when desired to liberate the arm C from the resistance of the spring-coupling I. The shaft O may be turned either by the pressure of the attendants foot onto a treadle secured to the shaft or by a suitable hand-lever, m, attached to said shaft.

The spring-support of the pin 12 on the arm P is necessary for this reason, viz: If the shaft O were partially turned and the pin v raised while the arm C and lever D were locked together and in operating position, as shown in Fig. 2 of the drawings, the return of the arm G to its normal position would cause the latch Zand piu o to collide and break one or the other of said parts ifthe pin u were not capable 6: of yielding to such contact.V

I do not claim, broadly, a spring-actuated repelling-arm arranged to receive the impact of the type-bed at the end of its stroke, as I am aware the same is not new; but

XVhat I do claim as my invention is- 1. In combination with the press-frame, reciprocating type-bed, and the movable cushioning-arm arranged to receive the impact of the type-bed at the end of its stroke, a repelling-spring connected with the said cushioning-arm by a coupling adapted to release the arm from the force of said spring, substantially as and for the purpose set forth.

2. In combination with the press-frame, re-

ciprocating type-bed, and the movable cushioning-arm arranged to receive the impact of the type-bed at the end of its stroke, a.V typebed repellingspring, a lever connected to said spring, and a coupling adapted to connect and disconnect the cushioningarm to and from the said lever, substantially as and for the purpose specified.

3. In combination with the press-frame A, reciprocating type-bed B, and repelling-arm G, the lever D, provided with vthe shoulder a, 83 the spring-coupling I, connecting the lever with the press-frame, the spring e, opposed to the rearward movement of the arm C, and the dog f, connected to s aid arm and adapted to engage -the shoulder a, substantially as de- 9o scribed and shown.

4. In combinationwith the press-frame A and type-bed B, 'theshaft g, journaled on said frame, the arm C, rigidly sccured'to said shaft, the lever D, pivoted on the same 'shaft vand provided with the shoulder a and abutment n, the stud-pin i, journaled inthe arm C, the dog' f and latch Z, rigidly secured to opposite ends of the said stud-pin, the spring-coupling I, connecting the lever D with the press-frame, and the spring e, opposed to the rearward movement of the arm C, substantially as describedand shown. Y Y

5. In combination with the press-frame A, typebed B, arm C, lever D, and dog f, detachably connecting said arm and lever and provided with the latch l, the shaft O, arm P, projecting from said shaft and reaching under the aforesaid latch, and the spring-supported pin v, carried on the free end of the arm P, substantiallyas and for the purpose set forth.

In testimony whereof I have hereunto signed my name and aiixed my seal, in the presence of two attesting witnesses, at Syracuse, inthe' county of Onondaga, in the State of New York, this 7th day of June, 1887.

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I l CHARLES ll. CAMPBELL. WVitnesses:

H. P. DENIsoN, C. BENDIXON.

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