US1664928A - Snap guide - Google Patents

Description

April 3, 1928.

w. M. KELLY l SNAP GUIDE Filed April 15, 1927 2 Sheets-Sheet l y ATTORNEY April 3, 192s.

W' M KELLY 1664,928 SNAP GUIDE lled Aprll l5, 192'?M 2 Sheets-Sh eet2 INVENTOR By W/m, 97W V 6' ATTORNEY Patented pr. 3, 1928.

UNITED STATES WILLIAM M. KELLY, OF WESTFIELD, NEW JERSEY.

SNAJ? GUIDE.

Application led April 15,

` rlhe present invention relates to side register mechanism for use in paper handling machines, such as sheet feeders for printing presses. More particularly the invention relates to that type of side register mechanism comprising upper and lower jaws reciprocating transversely to the path of the sheets and acting to grasp an edge of the sheet and shift the sheet laterally into correct registry with a printing c 7linder or other mechanism operating on t ie sheets and then to release the sheet and move back into position to operate on a succeeding sheet. The object of the `invention is to simplify the construction and improve the action of side register mechanism of this type.

A practical embodiment of the inventionV is illustrated in the accompanying drawings, of which:

Figure 1 is a. side elevation;

Figure 2 is a top plan view;

Figure 3 is a central vertical longitudinal section; Y

Figure 4 is a fragmentary vertical section through the front end of a paper feed board, showing the side register mechanism in end elevation, and

Figures 5 and 6 are perspective views of certain elements of the mechanism detached.

In Figure 4, 10 designates the feed boa-rd of a. printing press and 11 the feed board" extension. A plate 12 is secured under the feed board and a bar 14 carrying side register mechanism embodying the present invention is slidably mounted on plate 12 in" any suitable fashion. Bar 14 is reciprocated longitudinally in timed relation to the oper- I ation of the press in any approved manner,

for example, by mechanism such as shown in my application, Serial No. 490,290, filed August 6, 1921. As the present invention relates solely to the construction of the sheet handling mechanism mounted on bar 14, av complete understanding of the invention would not ybe facilitated by the showing of a specific mechanism for reciprocating the bar.

Figure 6 shows detached the base or frame* of the side register mechanism. This frame consists of a single piece of metal formed on its under side with a longitudinal channel 15, providing inturned, or reentrant, flanges 16, which when the frame is mounted on bar 14 kengage the under side of lateral Hanges 17 of said bar, see particularly Fig` ure 4. The frame is slotted through vertically at 18 from a point near the center to 1927. Serial No. 184,120.

and through one end, and is undercut at said end to a horizontal plane 19 coincident with the plane of the top wall of slot 15 and to a vertical plane 20 intermediate the ends of slot 18. The end wall 21 of slot 18 is downwardly inclined, as shown in Figure 3. The ends of the laterally spaced members 22A formed by slot 18 are beveled at 23 in a plane extending downwardly and inwardly with respect to the frame, for a purpose which will hereinafter appear.

-A plate-24 of the form clearly shown in Figure 5 is secured to the top'wallY of slot 15 by a screw 25 which is threaded in the frame and engages a countersunk hole in the inner end of thefplate, the head of the screw being ilush with the under surface of the plate. Plate 24 is provided with lateral lugs 26 engaging the sides of the frame, whereby lateral displacement of the plate is prevented. kThe top surface of the plate is cut away, as shown in Figure 5, andthe projecting ends and sides of the plate beyond lugs 26 are beveled as shown at 27.

A movable aw, or hammer, 28 is mounted in the `space between the members 22 of the frame so as to have a pivotal movement to and from plate 24 to clampv and unclamp sheets `against said plate. For this purpose the hammer is secured to a pin 29 pivoted in bearings in members 22 and projecting at both ends outside of said members. Arms 30 having bifurcated outerV ends are secured to the projecting ends of pin 29 and pivoted in the bifurcated ends of said arms are heads 31 of rods 32 which. extend through apertures in heads 33 of a cylindrical pin 34' supported in a horizontal slot 35 cut in the inner face of an upwardly projecting part of the frame. Coil springs 36 surround rods 32 and bear at theirV ends against the heads 31 and 33, respectively. i y

ln Figure 3 it will be observedfthat the plate 24 rests on ,the top surface of bar 14 with the inturned lianges 16 of the framey engaging the lateral flanges 17 kof the bar.

YThe engagement is sufficiently loose to permit the frame with the parts carried thereby to be slid along the bar .14 to any desired position of adjustment. In order to clamp the frame to the bar whenV adjustment has been made a set screw S7 vis threaded in an apertureV 37 of the frame with itsend adapt-- ed to engage the top of bar 14. Thissimple adjustment enables the mechanism to operate on ysheets of varying widths, and is the only adjustment that the mechanism rescrew 38. At this time bar 14 is at the limit` of its movement toward the left, looking at Figures 1 to 3. Vhen a sheet passing over the feed board approaches the position for registration, bar 17 moves to the right cansing the edge of the sheet to enter the throat defined by the inclined surfaces 23 and 27 of members 22 and plate 24, respectively, and when the sheet has fully passed into said throat an adjustable arm 39 on'an oscillating shaft 40 moves down against the hammer 28 and .moves the hammer until the lines of action of springs 36 pass above the pivot 29, whereupon the springs cause the hammer to snap down on the sheet and firmly clamp it against plate 24. The bar 14 continuing to move to the right the sheet is thus positively shifted laterally into correct registration, whereupon the arm 39, which in the meantime has moved up, again moves down and engages the tail end of the hammer, raising the hammer `until the lines of action of springs 36A pass below the pivot 29, whereupon the hammer moves to its fully open position with a quick snap action,`the

movement in this direction being limited by L engagement of the tail end of the hammer with the stop screw 38. The bar 14 now `moves towards the left to its initial vposition, positioning the mechanism for operation on a succeeding sheet. v l

VIt is not deemed necessary or desirable to show herein a specific means for operating shaft 40, as the present invention is not concerned with such mechanism. Mechanism suitable for this purpose is fully shown and `described in my copending application re-` ferred to above.

It will be clear from the foregoing that the side register mechanism embodying the present invention is positive and accurate in its action and of eXtreme simplicity in its construction. Modifications of course Vmay be made in the specific construction shown and described without changing theessen-v is claimed as new and desired to be procured n i mg, in combination, a bar reciprocating by Letters Patent is:

1. A sheet registering mechanism. comprising, in combination, a member reciprocating transversely with respect to the path of the sheets havinga lower sheet clamping surface, a. jaw on the member above said surface pivoted on an axis substantially parallel to said path, means operating in a plane transverse to the path of said' member for initiating the closing and opening Vmovements of the jaw at certain points in the path of reciprocation, and spring means for completing the movementsand holding the jaw in either closed or open position.

2; A sheet registering mechanism comprising, in combination, a member reciprocating transversely with respect to the path of the sheets having a lower sheet clamping surface, a jaw on said member above said surface pivoted on an substantially parallel to said path and having a tail portion xXtending on the opposite side of the pivot, an oscillating finger above said jaw adapted to move down against the jaw 4at one point in the path of reciprocation and against said tail at another point, to initiate the closing and ope-ning movements of the jaw, and spring mens for completing the movements and holding the jaw in either closed or open position.

3. A sheet registering mechanism comprising, in combination, a. bar reciprocating transversely to the path of the sheets, a frame slidable on the bar, means for clamping the frame `to the bar, the'frame being provided with upper and lower members4 forming a throat adapted to receive the edge of a sheet, a Jaw in the throat pivoted on an axis substantially parallel to said path adapted to clamp sheets against said lower Vrocation and against said part at another point, to initiate theclosing and opening movements and springs for. completing the movements and holding the jaw in either closed or open position. y

1 4. A sheet registering mechanism coinprising, in combination, a bar reciprocating transversely to the path of the sheets havin' lateral longitudinal flanges, a block forme with a longitudinal groove in its under side providing inturned flanges engaging the under sides of the lateral flanges, a set screw threaded in saidbloclrwith its end adapted to abut the top of said bar, whereby the block may be `clamped to the bar at anydesired position, sheet engagingmechanism lon the'block including a jaw pivoted on an'axis substantially parallel to the path of the sheets, and means for operating said jaw at certain points in the path of reciprocation.

5. Sheet registering mechanism, compris- Y shaft pivoted in bearings formed in the sides of said members, a jaw between the members fixed on said shaft adapted to clamp sheets against said plate, an arm fixed on aprojecting end of said shaft, a spring acting against said arm having a line of action passing above and below said shaft when the jaw is in closed and open positions, respectively, and means Afor operating said jaw at certain points in the path of reciprocation.

6. Sheet registering mechanism comprising, in combination, a reciprocating frame provided with upper and lower members forming a throat adapted to receive the edge of' a sheet, a jaw in the throat pivoted on an axis at right angles to the path of reciprocation adapted to clamp sheets against said lower member, a part rigid with the jaw extending on the opposite side of the pivot, an oscillating finger adapted to move down against the jaw at one point in the path of reciprocation and against said part at another point, to initiate the closing and opening movements of the jaw, and spring means for completing the movements and holding the jaw in either closed or open position.

7. Sheet registering mechanism comprising, in combination, a bar reciprocating transversely to the path of the sheets, having lateral longitudinal flanges, a block formed with a longitudinal groove on its underside providing inturned flanges adapted to engage the under side ofl the lateral flanges, a set screw threaded in said block with its end adapted to abut the top of said bar, said block being formed with laterally spaced projections having downwardly and inwardly beveled ends, a plate secured against the top wall of' said slot extending below said projections and forming therewith a sheet receiving throat, a jaw pivoted between said projections adapted to clamp sheets against said plate, said jaw having a tail extending on the opposite side of its pivot, an oscillating finger adapted to move down against the jaw at one point in the path of reciprocation and against the tail at another point, to initiate the closing and opening movements, and spring means forv completing the movements and holding the jaw in either closed or open position.

In testimony whereof I hereunto afiix my signature.

WILLIAM M. KELLY.

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