US1811483A - Clamp for paper cutters - Google Patents

Description

June 23, 1931-.

w. L. YALIQUETTE CLAMP FOR PAPER CUTTERS Filed May 11, 1927 2 Sheets-Sheet 1 INVENTOR.

A TTORNEXS J1me 1931- w. VALIQUETTE 1,811,433

CLAMP FOR PAPER CUTTERS Filed May 11, 1927 2 Sheets-Sheet 2 A TTORNEYJ against the back Patented June 23, 1931 UNITED STATES PATENT OFFICE .WILLIAM L. VALIQUETTE, 01 DAYTON, OHIO,

ASSIGNOR TO THE HARR-IS-SEYBOLD- CLAMIP FOR PAPER CUTTERS Application filed. May 11, 1927. Serial No. 190,579.

My improvements relate to the construction and operation of a supplemental clamping device or paper leveler to be used in connection wit-h the clamp mechanism of paper cutters such, for example, as is shown in the Seybold Patent No. 1,451,120. The object of the invention is to provide a clamp plate which shall extend over practicall T the entire surface of the paper pile for use with light and fluffy papers which ordinarily do not lie flat and when the package is adjusted gauge and clamped with the ordinary, somewhat narrow clamp along the cutting edge, the pile is apt to be disturbed and the sheets when out will not be of uniform width or length owing to the uneven character of the paper pile.

The invention consists of that certain novel construction and arrangement of parts to be hereinafter more particularly pointed out and claimed in which a grid is provided to cover the entire pile of paper with mechanism for operating same in timed relation to the operation of the clamp but independent of the clamp.

In the drawings Figure 1 is a side elevation illustrating my improvements.

Figure 2 is a plan view of the same.

Figure 3 is a detail end view of the outer right hand corn-er of the device.

In the drawings I have only illustrated the table portion of any ordinary paper cutting machine in detail, only certain elements of the clamp and clamp operating mechanism being indicated as such mechanism is shown in detail in the Seybold Patent No. 1,451,120 heretofore referred to.

The table is shown at 1 supported on the frame of the machine with the side standards 2-2 broken away. Secured along each side of the table at the rear of the clamp 3, are side bars 4- 1, between which is mounted a grid frame made up of vertically disposed metallic bars 55, bolted at the ends to cross bars 66, so as to form a substantial rectangular frame.

In order to support the frame for vertical movement parallel to the table, I employ bell crank levers 7, 7. To the ends of the hori zontal arms of these levers the frame is secured by studs 7a, 7 a projecting from the frame. The pivots of the bell crank levers are provided wth flanged rollers 8, 8 which ride on bridges 9, 9 on the side bars 4;.

The depending arms 10, 10 of the bell cranks are connected together by links 11, whereby a movement parallel to the table is obtained.

To guide the grid frame vertically the studs 7a, 7 a for the outer end of the grid are secured to boxes 12, which slide vertically in guide ways 13, formed in the side bars 1.

As the pressure frame or leveler is moved, the flanged rollers 8, 8 ride on the surface of the bridges 9 to permit the movement of the parts.

Secured to each end of the shaft 12 extending transverse and underneath the table and mounted in the depending portion of the side bars 4 is an arm or lever 13 one for each end of the shaft, which arms 13 are connected by a short link 14, with the upper arm 15 of a- T-shaped lever 15a, the central arm of which is connected to the cross bar 6.- The shaft 12 is rocked by a trigger arm 16 secured to the shaft 12, which is engaged by a roller or stud 17 on a gear 18 mounted in the frame. This gear 18 is driven by a train of gearing shown in dotted lines in Figure 1 from a driving gear 19 on the driving shaft. The gear 18 has an eccentrically arranged post 18a to which eccentric strap 18?) is connected. The strap 186 has a yoked end 180 which engages a pin 18d on the clamp bar 3. This mechanical driving connection is similar to that shown in the Seybold Patent No. 1,504,521. The gearing train is so timed that when the clamp 3 is in raised position, the roller 17 will be in contact with the trigger arm 16 as indicated in Figure 1. While in that position the grid frame will be supported over the table in raised position. As the main clamp 3 is brought down to the paper pile, the roller 17 is withdrawn from contact with the trigger arm, the gear 18 rotating in clockwise direction; this releases the grid or paper leveler and the grid drops to the paper pile by gravity thus smoothing out and leveling the paper.

' roller to contact with said lever, with mecha- In order that the grid, shall not interfere with the back gauge 20, the back gauge is provided with slots 21 to permit the vertical bars of the paper leveler to descend without interference in whatever position the back gauge may be located. The back gauge is adjusted in the usual way by an indexed band running over band wheels indicated at 22, 23 for front and back, the operating construction not being shown. v

To return the grid to its raised position, the trigger arm is formed with an extended surface 17a and so inclined that when the leveler is on the paper, the surface 17a will still he in the path way of the roller17 on the gear 18 in position to be returned to normal. It will be understood that the construction as shown a is designed for low piles of paper and that I for clamping paper operating mechanism, a crank levers mounted on the table,

therefore the full throw of the trigger arm '16 will not be sufficient to remove it from the path of the roller 17. V

Having thus described my invention what I claim as new and desire to secure by Letters Patent is 1; In combination with a table and means thereon adjacent an edge of the paper to be cut, a pressure frame and means for suspending same in horizontal alignment with the table, and for imparting parallel movement to said frame with relation to the table, a trigger arm secured to said means for holding the frame in suspended position and means operated by the clamp nism intermediate said rotatable member and the clamp operating mechanism whereby said lever may be released in timed relation to the clamp movements.

5. In combination with a table and clamp operating mechanism, a pressure frame with bell crank levers provided withrollers mounted to ride horizontally on the table, boxes secured to the pressure frame with vertical guide ways on the table for said boxes, links connecting said bell cranks, an operating shaft with an arm connected to the bell crank levers, a trigger arm mounted on said shaft and means operated by the clamp operating mechanism to release said trigger arm in timed relation to the clamp movement.

6. In a paper cutting machine, a bed, and a clamp to engage a pile of paper on the bed adjacent to an edge to be cut, of meanscomprising a plurality of bars for smoothing out the pile of paper on the bed,-and' an operating device for the clamp and said plurality of bars arranged and timed to smooth the bundle and retain it in smooth condition during the operation of thejclamp.

WILLIAM L. VALIQUETTE.

operating mechanism to release said trigger arm ahead of the engagement of the clamping means with the paper, for the purpose described.

2. In combination with a table and clamp a pressure frame, bell to which said pressure frame is secured, with links connecting said levers, an operating shaft with an arm connected to the bell crank levers, a trigger arm mounted on said shaft and means operated by the clamp operating mechanism to release said trigger arm in' timed relation to the clamp movement.

3Q Incombination with atable and means for clamping'paper thereon adjacent an edge of thepaper to be cut of a pressure frame,

means for supporting the frame above the table and mechanism intermediate thesupporting means and the clamp operating mechanlsm to release the frame supporting devices ahead of engagement of the clamping means with'the paper, said; frame belng shaped and located so as to cover that portion of the paper'away from the edge to be v clamped and cut.

4. In combination with a table and a clamp with clamp operating mechanismof a supplemental clamp member, comprising a metallic grid, a lever for supporting the grid above the table and a rotatable member with

Images