US783823A

US783823A - Weighted holdfast for printing-films.

Info

Publication number: US783823A
Application number: US21965604A
Authority: US
Inventors: Benjamin Day
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-08-05
Filing date: 1904-08-05
Publication date: 1905-02-28
Anticipated expiration: 1922-02-28

Description

No. 783,828. 7 PATENTED FEB. 28, 1905.

- B. DAY.

WEIGHTED HOLDFAST FOR PRINTING FILMS.

APPLICATION FILED AUG. 5, 1904.

2 SHEETS-$11331 1,

III

PATENTED FEB, 28, 1905.

B. DAY. WEIGHTED HOLDPAST FOR PRINTING FILMS.

APPLICATION FILED AUG. 5, 1904.

WIT IVE 8858:

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thvrrpp @"fflflflhti i arisiu'ir Uuuuiciu HEN JAMl N DA Y, ()1? N E S .l llO BOKltN, 'N n'w J EltSlltY.

WElGd lFfIEU ItlOlLllDl r iQFf" FUN li l lllltll'li'll l lif 'ilhliflfiii SPECIFICATION forming part of Letters Patent No. 783,523, dated February 28, 1905.

Application tiled August 5, 1904-. Serial No. 219,656.

To all who) it 11m cancel-71 Be it known thatl, Bnuaa'ms DAY, a citizen of the United Stateaand a resident of \"Vest floboken, in the county of Hudson and State of New Jersey,have invented a new and lmprored Weighted ltioldfast for Printing- Films, of which the following is a full, clear, and exact description.

My invention relates to means for. holding a printing-film in place upon any part of a large piece of work--sueh as a drawii'ig, map, or any large flat printing-surface of metal or stono-- my purpose being to secure the printing-film in a particular arbitrary location, allowing the same to be raised, lowered, and adiusted in accordance with the usages of the art and yet permitting the printing-liln1 to be used for purposes of printing byapplying pressure upon its back in theusual manner.

My device is further intended to enable the operator to shift the printing-film and its adjustments from one part of the work to another by simply lifting it by hand.

A further object of my invention is to economize room and to simplify the mechanism to a minimum number of parts.

Reference is to be had to the accompanying drawings, forming apart of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a plan view showing the holdfast ready for use and having a printing-film connected thereto. Fig. 2 is a side elevation viewed as from the left of Fig. 1, parts being in section. Fig. 3 is a front elevation of the mechanism, partly in section, on the lines 3 3 of Figs. 1 and 2. Fig. t is an enlarged sec tion upon the line is of Fig. 3 looking in the direction of the arrow, and Fig. 5 is an enlarged section upon the line 5 of lfig. 1 looking in the direction of the arrow.

A heavy fiat bar 6 is provided upon its bottom with a facing T, of cloth, for the purpose of affording a gentle grip as between the bar 6 and any surface upon which the same may rest. Mounted upon the bar (*3 are vertical standards 8, provided with feet 9, SGOIU'Ctl upon the bar by means of screws 10 or other appropriate fastenings. Annular bearings 'l '1 are integral with the standards 8. Standards 19., somewhat similar to the stamlards 8, are secured in like manner by means of screws [3 or other fastenings upon the bar 6, and these staiujlards i2 terminate in annular bearings 14. A handle revolubly mounted upon a rod 16, is provided for the purpose of lifting the entire apparatus around in the manner of lifting a smoothing-iron. The rod 16 is provided at each of its ends with an annular groove 17, into which [its a screw 18, engaging the annular bearing 11, and each screw 18 is provided with a milled edge 19, whereby it may be manipulated by the lingers. h lountcd upon each end of the red It is a head 20, secured rigidly to the red by means of a key 21. integral with the head 20 and forming the upper portion thereof is a head provided with bearings 22 22", spaced apart, as indicated in Fig.

4.. The central bearing 22-" is provided with a screw 23, which engages one of the rods 2%, of which thereare two, one at each end of the bar 6. These rods are iarallel with each other and are free to slide longitiiidinall y through the bearings 22 22", except when clamped by means of the screws 23. The rods is are each preferably provided with a groove 29., which engages a boss 22", mounted within one of the bearings 22.

At each end of the bar 6 is a sectm' 25, provided with a slot 26, as shown in Fig. Each sector 25 is clamped by a screw 27 and a washer 2.8 against the standards it, the screws 27 being manipulated by hand. The rods .24; terl'ninate in heads 29, provided with screws 30 and engage the ends of a rod 31. Mounted upon the rod 31 are sliding blocks 32-, adapted to be clamped rigidly upon the red by means of a thumb-screw 32. llflach block 332 is provided with bearings 32", loosely encircling the rod bl, l )isposed below each screw 32 is a friction-block 32", mounted upon a spring 32 and adapted to be forced downward by the action of the screw 32, so as to secure the block 32 rigidly in position upon the rod 31. The blocks 32 are therefore adjustable both angularly around the rod 3 as a center and also longitudiintlly of the rod. The blocks 32 carry the pivots 33, which engage the hinges 3 1. so as to allow the same to move angularly upon the pivot 332:3, considered as a center.

The pivots 33 are mounted directly upon adjustable members 32. controlled by screws 32 for the purpose of adjusting the pivots 33 relatively to the blocks 32. Each block 32 carries a frame 32, and adjustably mounted upon this frame and integral with the member 32 are bearings 32 for supporting the screws 32'. As the mechanism mounted upon the blocks 32 is fully described in my Patent No. 666,087 forasafety-adjuster for printingfilms, it is not necessary to describe the same again in detail. Suffice it to say that the blocks 32 being capable of sliding longitudinally of the rod 31 and of being clamped thereto by means of the screws 32 can be placed any desired distance from each other consistent with the length of the rod 31 and can also be moved to any desired angle relatively thereto. The hinges 3ft and pivots 33 are also described in my patent above mentioned.

Screws

35, 36, and 37 are used for adjusting the pivots 33, also described in my abovementioned patent.

The printing-film is shown at 38 and is mounted in a frame 39, the frame being adapted to swing angularly upon the pivots 33. as above stated. The work is shown at 40 and may consist of a lithographic stone or of a block or member of any kind upon which it may be desired to reproduce the design upon the printing-film. It may be mounted upon a support 41 so as to bring it to a proper level convenient for the hand and eye of the workman.

My invention is used as follows: If it be desired to work upon a stone, such as 40, or upon a block or substantially cubical surface of any kind, the parts are arranged as indicated in Fig. 2. The sector 25 and the rod 16 are turned a slight fraction of a revolution, so as to bring the rods 24 into such position that the frame 39 is substantially level with the top of the stone &0, and the screws 27 are tightened. The rods 24: are now slidably adjusted within the bearings 22 22, so that the printing-film 38 is in its exact or proper position over the stone 40. The frame 39 may now be raised and lowered upon the pivots 33, considered as a center, and in every instance the printing-film 38 will be placed in the same position relatively to the stone 40. All of the work to be done with the printing-film in the position which it thus assumes relatively to the stone 40 is now completed, and the flat bar 6 is shifted to a different position by means of the handle 15. The adjustments are now made as above described, and the printing-frame 39 is in such position that the printing-film 38 assumes a proper angle with its position as first applied to the stone 40. Suppose, however, that it is desired to use the printing-film 38 upon the stone 40, which may be that of a map, chart, plan, or large piece of paper. The members 40 L1 are removed, the screws 23 loosened, the rods 24 drawn to the right from the position indicated in Fig. 2, and the sectors 25 are moved angularly and set to positions different from those indicated. The printing-frame 38 may thus be drawn down directly upon the map or surface 42 and may be raised and lowered upon the pivots 33 as a center. The work incidental to this particular position having been finished, the bar 6 and all parts supported by it may be moved to a different angle by means of the handle 15. When the work is finished, the entire apparatus is removed by means of the handle 15.

Having now described my invention, I claim as new and desire to secure by Letters Patent- 1. The combinationof a weighted member, a cloth facing mounted thereupon for producing friction between said member and the surface whereby it is supported, and mechanism connected with said weighted member for supporting a printing-film.

2. The combination of a weighted member provided with standards, rods supported by said standards and movable relatively thereto, and mechanism connected with said rods for engaging a printing-film so as to allow the same to move angularly thereto.

3. The combination of a comparatively heavy member adapted to rest temporarily upon a supporting-surface and provided with standards having bearings, sectors provided with a revoluble member engaging said bearings, said sectors being movable relatively to said standards, means for clamping said sectors at a predetermined angle at will, bearings connected with said sectors and rigid relatively thereto, rods slidably mounted within said bearings, means for clamping said rods relatively to said bearings, a longitudinal rod connecting said rods together, and blocks slidabl y mounted upon said longitudinal rod and provid ed with mechanism for allowing a printingfilm to swing thereupon.

4. The combination of a comparatively heavy member provided with a surface for engaging a paper or analogous object upon which work is to be done, and mechanism connected with said member for supporting a printingfilm so as to allow the same to move relatively thereto.

5. The combination of a comparatively heavy member provided with a surface for temporarily resting upon the work to be done, a handle for lifting said member, and mechanism connected with said member for supporting a printing-film so as to allow the same to move angularly upon a pivot as a center.

6. The combination of a longitudinal bar, means for adjusting the same to different positions, and mechanism slidably mounted upon said bar and adjustable relatively thereto, said mechanism being provided with pivots for supporting a printing-frame.

7. The combination of a comparatively heavy member for temporarily engaging a surface, mechanism for supporting a printingframe so as to allow the same to swing relatively thereto upon a pivot as a center, and means for connecting said mechanism with said member so as to permit the adjusting of relative distances there'between.

8. The combination of a comparatively heavy member provided with standards, bars supported by said standards and movable angularly in relation thereto, and mechanism connected with said bars for supporting a printing-frame so as to allow the same to swing around a center.

In testimony whereof I have signed my name to this specification in the presence of two sub- I5 scribing Witnesses.

BENJAMIN DAY. \Vitnesses:

LEWIS BURGESS, HARRY W. WATRoUs,