US301418A - Copying-press - Google Patents

Description

@N0 Model.)

` G;V W. WILLIAMS.

COPYING PRESS.

No. 301,211.8.r

Patented July 1, 1884,.'

' Q9 ya m gm. d ,2%

' N. Frrzns mammgnpw. washingnw. n.6.

NITED 4Srafrns f vPirrsN'r rrics.

GEORGE W'. WILLIAMS, OF CHICAGO, ILLINOIS.

COPYING-PRESS.

SPECIFICATION forming part of Letters Patent No. 301,418, dated July 1, 1884. Application filed November 26. 1883. (No model.)

To afZZ whom it may concern: .y

Be it known that I, GEORGE W. WILLIAMS, of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in a Copying-Press, ofV which the followingis afull, clear, and exact description, that will enable others to make and use the same, reference being had to the accompanying drawings, formingapart of this specication. l

This invention relates to improvements in that class of devices used for taking impression copies di' Written matter upon dampened pages by subjecting the same to a mechanical pressure, the object being to provide a press that is easily and conveniently operated, and at the same time one that obviates the objectionable features of the ordinary screw-press.

The nature of this invention consists in the employment, arrangement, and construction of certain `novel featureaas will be hereinafter more fully set forth in detail.

Figure l is a view in perspective of a press embodying my improved features. Fig. 2 is a side elevation showing a part removed and a part in section, and embodying a modification with reference to an eccentric or curved slot in the cam-foot. Fig. 3 is a top view of the vertical box through which the central standard passes. Fig. 4 shows a part broken awayl from Fig. 1, the journal-cap'being removed to expose the interior. l

Referring to the drawings, Arepresents the base of the press, B the arched bridge, and C the platen. The standard Dis cast integral with the platen C and extends up through the vertical box a in the bridge B. This standard is reduced in size from the lower end of the box a upward, thereby forming the shoulder ci', which provides the lower bearing for the spiral spring ci, that is coiled around said standard. The boxe 'is formed with the chamber a3 for the reception of the spiral-spring, as shown in Figs. 2 and fi of the drawings.

The box o: is provided with the removable cap a4, which is cut away, so as to have the shoulder-bearing t on the companion part of the boxii'ormed in the bridge, thus relieving the bolts attaching said cap from any undue strain.

Forlight presses the standard D may be of about the same diameter the entire length, and

provided with the annular iiange D to forni the bearing for the lower end of the spring. Y The lower end of the lever E is provided with the camfoot F, which is cut out length- Wise th rough the center, so as to adapt the same lto straddle the upper end of the standard D,

platen, and the power to make the impression is applied automatically by simply allowing the lever E to assume a perpendicular position, as shown in Fig. 1 of the drawings.

The arched bridge is provided at each side with the upward-projecting locking-hooks d d', which serves the purpose of securing and holding the lever E in a horizontal position when the platen is raised up to remove the matter from the press. The lever may be moved toward either end ofthe press, as may be the most convenient. The curved bearing of the cam-foot on the top of the box in the bridge gives such a leverage that but very little power is required to raise the platen in order to remove the'copying matter, and when the end of the lever is released from the lool;- ing-hook it will at once assume a vertical position, and the spring a2 Will automatically apply the required pressure. Each end of the platen is provided with the guide-lugs di, which engage with the recesses d3 on the iuside of and at each end of the arched bridge. Extending out horizontally from the bottom o f these recesses are the channels 14,(shown in Fig. 2,).ivhich permits of the platen and the connecting parts being conveniently removed by simply taking oli the cap on the vertical box. Byvthis arrangement the eccentric lever is employed to remove the pressure from the press, instead of applying it.

I do not conne myself to the precise form of spring shown, but may make use of another style of spring that would be suitable for the purpose. I may also make use of more than IOO one spring, in which case they could be placed underneath the bridge at each side of the center and have a bearing on the platen nearer the ends. In large presses this arrangement mightbe necessary, but ordinarily the arrangev ment shown will be sufficient. The power of the spring will be in accordance with the size gf the press and the nature of the work to be one.

Fig. 2 of the drawings is a modification showing a somewhat differently-shaped camfoot,which is provided with a curved or eccentric slot.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a copying-press, the combination,witl1 a platen provided with a vertical standard formed integral therewith, of a spring adapted to have a downward pressure bearing on said standard, whereby the required pressure is automatically applied to said platen, substantially as described.

2. The combination, with the platen C, provided with the standard D, having the shoulder-bearing a', of the vertical box ci, the chamber a3, and the spring @substantially as andl for the purpose set forth. l 3. rIhe combination, with the platen C an the standard D, of the spring a2, the arched bridge B, and the eccentric-lever E, provided on the lower end with the cam-foot F, which is connected with the upper end of the standard D, whereby the platen is raised up from the lbase or bed to permit of the copying matter being removed, substantially as described.

4. The combination, with the base or bed of a copying-press, of the arched bridge B, having a central chambered box provided with a removable cap, the locking-hooks d d', the 1ever E, having on the lower end thereof the cam-foot F, the standard D, the spring a2, and the platen C, substantially as described.

' vGEORGE W'. WILLIAMS.

Witnesses:

L. M. FREEMAN, V. STANwooD.

Images