US2126681A - Control device for printing machines - Google Patents

Description

Aug. 9, i938. c. w. GINSBERG CONTROL DEVICE FOR PRINTING MACHINES Filed Dec. 6, 1935 Patented Aug. 9, 1938 we STATES CONTROL DEVICE FOR PRINTING MACHINES Charles W. Ginsberg, Brooklyn, N. Y., assignor to R. Hoe & 00., Inc.

, New York, N. Y., a corporation of New York Application December 6, 1935, Serial No. 53,193

13 Claims.

This invention relates to improvements in delivery and control mechanisms for printing or like machines and more particularly relates to a choke detecting device for use with delivery mechanisms whereby possibly damaging chokes will be detected and the machine promptly stopped, to avoid damage to the parts thereof.

In printing and like machines, chokes caused by products becoming collected and jammed between the various parts of the delivery mechanism frequently occur, causing broken machine parts, and considerable inconvenience and loss of time, due to stoppages, required to repair the parts and to release the choke. Chokes have been found to occur after the products have passed the folding rollers of a delivery mechanism and are disposed between the receiving fan and a product guide, while being carried from the rollers to a delivery belt or other conveyor.

One of the objects of this invention is to provide in association with a delivery mechanism, means to detect the presence of a choke and to cause the immediate stoppage of the machine when the choke assumes proportions approaching a predetermined damaging degree.

Another object is to provide in a delivery mechanism, a product guiding member which, upon being moved by a collection of products pressing thereagainst during the formation of a choke, will be caused to detect a damaging proportion thereof and to operate a control to prevent further operation of the machine.

A further object is to provide in a delivery mechanism, a product guiding member which is movable by an unwarranted collection of products between it and a part of said delivery mechanism, and is adjustable to predeterminably limit the degree of such collection of products before such movement occurs, and is adapted when so moved to operate a machine control, which is adjustable for actuation thereby, after a predetermined degree of such movement has taken place.

It is also an object of this invention to provide a delivery and control mechanism for printing machines of generally improved construction, whereby the device will besimple, durable and. inexpensive in construction, as well as con vcnient, practical, serviceable and efficient in its use.

With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts, and in the details of construction hereinafter described and claimed.

The preferred embodiment of the invention is illustrated in the accompanying drawing wherein the features of the invention are somewhat diagrammatically shown, embodied in a delivery and folding mechanism of a printing machine for printing newspapers and like folded products; another position of some of the parts being shown in dotted lines.

The printed web ll, leading from a printing or like machine, is shown running between a folding cylinder [2 and a cutting cylinder is from which it is fed between a pair of folding rollers l4 and 15, in the form of a folded sheet it, into pockets [1 of a rotatable fan or fly [8. From the fan I8 the folded sheets 16 are deposited on delivery belts l9.

During their passage from the rollers I4 and i5 to the fan IS the products It, in some instances, bunch up in the position indicated in dotted lines at 2|, causing a choke to be formed between the fan I8 and a product guide 22, usually provided at this point. The guide 22 is herein shown secured to a shaft 23 supported in an end of a supporting member 24, having an extended stem portion 25. The stem portion 25 is supported for sliding movement in a bracket 26 secured by screws 21, to a machine frame part 28. A spring 29, disposed between the bottom of a counterbore 3i formed in the bracket 26 and a shoulder 32 formed on the stem 25, tends to urge the guide 22 in a direction toward the product i to maintain the guide in its normal product engaging position, as shown in full lines in the drawing, but permits movement of the guide 22 in a direction away from the product, to the position shown in dotted lines. The guide 22 is freely rockable about the shaft 23 as a pivot, and is provided with a curved face disposed adjacent to and partially embracing the periphery of the fly or fan 18. The guide 22 cooperates with the pockets H to hold the products on the fly i8 while they are being carried thereby past the guide and, by cooperation with the periphery of the fly l8, confines the loose product ends extending from the pockets l1 substantially until the products are in position to be deposited upon the delivery belts l9.

Adjustment of the guide 22 to vary the normal product engaging position thereof, is made possible by the threaded engagement of a stop collar 33 with the threaded end 34 of the stem 25. The collar 33 may be secured in position on the stem 25 by means of a set screw 35. By cooperation with the end of the bracket 26 the collar 33 determines the normal position of the guide 22 in respect to the product It and the fan 98. Any thickness of products in excess of the determined allowable amount will move the guide 22 and its stem 25.

To immediately detect and obviate the formation of possibly damaging chokes, a control device, herein including an electrical switch 36, is provided. The switch 36 is connected by conductors 3'! and 38 to the motor controls of the printing machine (of which the cylinders l2 and l3 form a part), and is normally in closed circuit condition. Opening of the machine motor circuit by actuation of the switch 36 causes the immediate stoppage of the machine and the prevention of damage to the delivery mechanism.

Provision is herein made to actuate the switch 36 by movement of the guide 22 by an excess of collected products, through engagement of a collar 39, threadingly adjustable on the stem 25 and which is securable thereto in adjusted position thereon, by a set screw 4|. The collar 39 may be adjusted on the stem 25 to engage an operating member 42 of the switch 36, when moved with the stem 25 by the guide 22, to cause actuation of the switch 36 into open circuit condition, whereby the machine motor will stop, and thus cause stoppage of the feed of products to the delivery mechanism.

The switch 36 may be adjustably mounted upon a stationary part of the machine or, as shown, secured to the bracket 26 by a strap member 43 to dispose its operating member 42 into the path of movement of the collar 39. The collar 39, by being adjustable on the stem 25, permits adjustment of the device to permit a predetermined thickness of products to be collected and to pass the guide 22 without causing the switch 36 to be actuated to effect the operation of the machine motor.

The provision of the choke detecting and control device described above, and as illustrated in one form in the drawing, permits a predetermined thickness of products to be collected and passed to the conveyor I9 without the formation of damaging chokes, while preventing the collection of large excesses of products beyond the determined amount by detecting the same and stopping the machine with its associated delivery mechanism, beforedamage occurs. Due to the adjustable features above describe-d, a predetermined number of products may be collected and passed, and slight excesses therein permitted, before the switch 36 is actuated, making the device particularly useful under the varying conditions met with in printing newspapers and like products.

It will be understood that the invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore desired that the present embodiment be considered in all respects as illustrative and not restrictive, and it will be further understood that each and every novel feature and combination present in or possessed by the mechanism herein disclosed forms a part of the invention included in this application.

What I claim is:

1. In a delivery mechanism for a machine wherein products are folded and delivered, a rotary fly to receive and carry products, a guide disposed adjacent the periphery of the fly to be engaged by the products as they pass by the guide, while being carried by the fly, a bracket in which said guide is slidably mounted, said guide being slidable in said bracket upon being engaged by an excess of products passing thereby, a control device adapted to be connected to the machine to stop the same, means to actuate said control device upon sliding movement of said guide by the products, and means to return the guide to its initial position after the excess of products has been removed.

2. In a delivery mechanism for folding and delivering products of a printing machine, a rotatable member adapted to receive and carry products, a guide disposed adjacent the periphery of said member and past which the products are moved While being carried by the member, a bracket in which said guide is slidably mounted, said guide being slidable in said bracket away from said member when engaged by an excess of products passing thereby, means to adjust said guide to vary its spacing from said member to permit varying amounts of products to simultaneously pass thereby without moving the same, control means operable to stop delivery of the products and actuated by the movement of said guide by an excess of the products in one direction, and a spring to return said guide to its initial position after the excess of products has been removed.

3. In a delivery mechanism for folding and delivering products from a printing or like machine, a rotary member, a product guide mounted adjacent the periphery of the member and arranged for movements in directions toward and away from the periphery of the member, means to constantly urge said guide in 'a direction toward the member, adjusting means to limit such movement, and adjustable means adapted to control the delivery of products and operable by the movement of said guide in a direction away from the member.

4. In a delivery mechanism for folding and delivering products from a printing or like machine, arotary member, a product guide mounted adjacent the periphery of the member and arranged for movements in directions toward and away from the periphery of the member, resilient means to constantly urge said guide in a direction toward the member, adjustable means to limit such movement of said guide, control means adapted to control the delivery of products, control actuating means movable with the guide, and means to adjust said control actuating means to vary the required amount of movement of said guide in a direction away from the member to actuate the control means.

5. In a delivery mechanism for folding and delivering products from a movable part of a printing or like machine, a rotary fly having pockets to receive products on its periphery, a product guide disposed adjacent the periphery of the fly, a support for said guide, said guide being slidable relatively'to said support in directions toward and away from the periphery of the fly, spring means to constantly urge said guide in a direction toward the fly, an adjustable stop to limit the movement of said guide in the direction toward the fly, control means adapted to be associated with the movable part of the machine to stop the movement thereof, and connecting means between said guide and said control means whereby movement of said guide in a direction away from the fly will actuate said control means to stop the movable machine part, said connecting means including a part slidably movable with the guide and adjustable to permit various amounts of movement of said guide in a direction away from the fly before said control means will be actuated thereby.

6. In combination, means to deliver a product from a printing machine, a rotatable fly having means to hold and carry a product upon its periphery, a member disposed adjacent to and spaced from the periphery of said fly to cooperate with the product carrying means to retain a product thereon and being slidably mounted for movement toward and away from said fly, a control device adapted to stop the delivery of products by said delivery means, and a part adjustably secured to said member for adjustment thereon in the direction of the movement of, and movable with said member to actuate said control device when an excess of products becomes disposed between said fly and said member.

7. In combination, means to deliver products from a printing machine, a rotatable fly having means to hold and carry products upon its periphery, a member adjacent to, and normally spaced a determined amount from, the periphery of said fly and being slidably mounted for movement away therefrom, the member cooperating with said product holding means to retain products upon said part, a control device adapted to stop the delivery of products by the delivery means, a part adjustably secured to said member for adjustment thereon in the direction of the movement of, and movable with, the member to actuate said control device when an excess of products becomes disposed between said fly and said member, and a part adjustably secured to said member for adjustment in the direction of the movement thereof and adapted to vary the normal spacing of said member from the periphcry of said rotatable fly.

8. In combination, means to deliver products from a printing machine, a rotatable fly having means to hold and carry products upon its periphery, a guide member adjacent to, and normally spaced a determined amount from, the periphery of said fly to permit a determined thickness of products to pass therebetween, and being slidably mounted for movement away therefrom by an excess in the thickness of products, a spring acting on said guide member to maintain it in its normally space-d position, the member cooperating with said product holding means to retain products upon said fly while the products pass thereby, a control device adapted to stop the delivery of products by the delivery means, a part secured to and movable with the member and adjustable thereon toward and away from said fly to actuate said control device when said member is moved by an excess of products, and means to varythe normal spacing of said member from the periphery of the rotatable fly.

9. In combination, means to deliver products from a printing machine, a rotatable fly having means to hold and carry products upon its periphery, a guide member adjacent to, and normally spaced a determined amount from, the

periphery of said fly to permit a determined thickness of products to pass therebetween, a slidable support extending from said guide member away from said fly and upon which said member is mounted for free rocking movement, a control device adapted to stop the delivery of products by the delivery means, a control actuating member adjustably mounted on the slidable support to vary the amount said support with the member moves away from the fly before actuation of said control device, a spring to urge said guide member toward said fly, and a stop adjustably mounted on said support to limit the movement of said guide member by said spring and to vary the normal spacing of said member from the periphery of said rotatable fly.

10. In a delivery mechanism for a printing machine, means to fold products, a rotary fly having pockets to receive the folded products from said folding means, a freely rockable member disposed adjacent to the periphery of said fly, spaced therefrom, and partially embracing the same to permit products carried by said fly to pass therebetween while being carried thereby, a control device having an actuating arm adapted to interrupt the operation of said folding means, a support upon which said member is mounted, a stem extending from said support, a bracket in which said stem is slidable to permit the member to be moved away from the periphery of said fly when the member is engaged by an excess of products attempting to pass between it and said fly, a spring acting on said support to maintain said member in operative position adjacent said fly, a stop member on said stem to limit the movement of said support by said spring and a part adjustably mounted on said stem and movable with said support to engage said actuating arm to actuate said control device when said member is moved by an excess of products disposed between it and said fly.

11. In the delivery mechanism of a printing machine, having product feeding means, a rotatable fly adapted to receive and carry sheet products from the feeding means to a point of delivery, a sheet guide having a curved face presented toward said fly, a support upon an end of which said guide is pivotally mounted, a bracket in d which said support is mounted for sliding movement to move said guide toward and away from said fly, a stem extending from the other end of said support and having an outer end disposed beyond said bracket, a spring acting against said support to urge it toward said fly, a stop adjustably secured on the outer end of said stem and adapted to engage the bracket and limit the movement of said support toward said fly, a control device operable to stop said feeding means, and a part adjustably secured on the outer end of said stem and adapted to actuate said control device when said guide is moved against spring tension away from said fly by an excess of products collecting therebetween.

12. In a delivery mechanism having a rotatable fly, a guide member disposed adjacent said fly and having a concave surface facing said fly and being spaced from the periphery of the fly to permit products carried by said fly to pass, a support upon the end of which said member is mounted, a bracket in which said support is slidable to move and to carry said member toward and away from said fly, a spring acting against said support to urge it toward said fly, a control device operable to stop the delivery mechanism,

and means carried by said support to actuate said control device when the support is moved against spring tension by an excess of products collecting between said fly and said guide.

13. In a delivery mechanism having a rotatable fly, a guide member disposed adjacent said fly and having a concave surface facing said fly and being spaced from the periphery of the fly to permit products carried by said fly to pass, a support upon the end of which said member is mounted, a bracket in which said support is slidable to move and to carry said member toward and away from said fly, a spring acting against said support to urge it toward said fly, an adjustable stop to limit the movement of said support toward said fly, a control device operable to stop the delivery mechanism, and a part adjustable lengthwise on said support and adapted to actuate said control device when the support is moved against spring tension by an excess of products collecting between said fly and said guide.

CHARLES W. GINSBERG.

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