USRE7138E - Improvement in printing-presses - Google Patents

Description

B. O. WOODS, c1ecd.-& W. S. T'UTTLE.

SOPHRONIA P. woons, Adminx of B. o. woons, dec

PRINTING-PRESS.

Reiss ued May 2-3, 1876.

d &; A'ssignee of W. S. TUTTLE.

v Inuefiiors.

Y X uaa' 1 UNITED STATES SOPHBONIA P.-WOODS (ADMINISTRATRIXQOF BENJAMIN 0. woons, DE-

PATENT orries.

CEASED) AND WILLIAM s. TUTTLE, OF- BOSTON, MASSAGHUSETTSj-SAID TUTTLE ASSIGNOR TO soPHRomAr. woons, AFORESAID.

IMPROVEMENT m jeamrl ne pazsszs.

Specification forming part of Letters Patent No. 67,475, dated August 6,1867 reissue No. 7,138, dated e May 23, 1876; application filed May 11, 1875.

To all whom it may concern:

Be it known that'BENJAMIN 0. Woons, now deceased, and WILLIAM S. TUTTLE, both of the city of Boston, county of Suifolk and State of Massachusetts, did jointly invent certain with the platen of a printing-press, and the frame-work thereof, of adjustable crank-arms,

, to which the platen is pivoted, for adjusting the face of the type, as will hereinafter be described.

Referring to the drawings, Figure 1 is a perspective view of a press-embodying the invention. Fig. 2 shows the manner of attaching the secondary .tozzle to the bed-plate or frame-work of the press, and Fig. 3 shows the devices for adjusting the platen.

, Like letters refer to the same or corresponding parts in all the drawings.

. ais the frame-work or bed-plate of the press, having attached to its upper side the form-receiver or type-bed b, which is provided with the projecting lugs b b. w x are screws, passing through the said lugs, 'for adjusting the position of the type-chase on the form-receiver or bed. 0 is the platen, and has the arms d attached. These arms d are pivotedto the crank-arms e, which also are pivoted to the bed-plate or frame-work. (Seef.) There are two of these arms, and corresponding parts, one arranged at each end of the platen and each side of the press, and each crank-arm is furnished with an adjusting-screw, g; The turn ing of these screws 9 in one or the other direction throws the lower part of the platen outward or inward, as the case may be, toward or from the plane of. the type-bed b, and consequently. furnishes the means for bringing theminto position parallel to each other at the time the. platen is thrown into position to receive an impression. ment furnishes a more perfect facility for accurate adjustment by the two screws than is usually attained with four or more screws, &c.,

This arrangeand constitutes an important feature of the improvement. A toggle-joint, h i, is jointed to.

the bed-plate or frame-work of the press at j, and to the platen c at k. It will be noticed that by throwing thev center hinge of this togglejoint in the direction of the pins f, so as to bring the parts h i to approach a line of coincidence, the platen will be thrown toward the formreceiver or type-bed, while in the position shown in Fig. lit has receded from it. Jointed tothe first toggle-joint h i is a second one, m a, one end being attached to the hinge of the first joint at p, and the other to the bed-plate or frame-work at -q, Figs. 1 and ,2. A treadle or other rod, 8, for working it is jointed in common with the hinge at 7'. By.

depressing the rod 8, the toggle m a is made to operate the toggle h 12 and throw the platen toward the type-bed b. The weight of the platen returns it to the position shown. This combination of the two toggles gives a very easy-action to the parts, while the arrangement is such that the parts m s are brought 7 nearly in a common line, and in a line nearly transverse to the line formed by h i, at the point of movement where the impression takes place, so that the full effect of the toggle h t is realized at the point of impression, and still an easy and approximately equalized movement is secured in the early part of the action. g

Other points in the construction, as well as the material, not already described, need not differ materially from other presses of the class.

It will thus be seen that by the arrangement of the adjusting mechanism, in combination with the arms of the platen, an easy and accurate adjustment of such device is effected,

while the screws in the projecting lugs on the form-receiver or bed afford a ready and rapid placement of the type-chase in any desired position thereon. r Y

Having now fully described the construction and operation of this device, what is claimed as new, and the invention of said BEN- JAMIN 0. Wdons, deceased, and WILLIAM S. TUTTLE, is-- l thereof, of the adjustable crank-arms, to which the platen is pivoted foradjusting the face of 1. The combination, with the platen of a printing press, and the framework or bed the platen with respect to the face of the type. 2. The combination, with the platen of a printing-press, and the arms d, carrying the same, the pivoted crank-arms attached to the arms, and the .setscrew g' for adjusting the crank-arms, as and for the'object specified. 3. Ina printing-press, provided withaswinging platen, the combination, with such platen and the bed provided with lugs carrying adjusting-screws, of a type-chase and adjustingdevices, substantially as described, applied to I the said platen, whereby the type or form is brought in proper central position with respect to the platen, and the face of said platen is adjusted with respect to the face of the type as and for the purposes set forth.

SO PHRONIA P. WOODS, Administra-tr-ix 0f the estate of Benjamin 0.

Woods, deceased; WILLIAM S. TUTTLE. Witnesses:

Anson S. GoMEE, FRANK P. STANYAN.

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