US2153283A - Friction applying means for typographical machine assembler slides - Google Patents

Description

April 4, 1939. l. s. STEIN 2,153,283

FRICTION APPLYING MEANS FOR TYPOGRAPHICAL MACHINE ASSEMBLER SLTDES Filed March 8, 1938 GUM/M Patented Apr. 4, 1939 UNITED STAT E GRAPHICAL SLIDES MACHINE ASSEMBLER Irwin G. Stein, Columbus, Ohio Application March 8,

5 Claims.

This invention relates to typographical machines and is particularly directed to that type of machine which automatically casts an entire line of type at one time. Machines of this char- 5 acter are ordinarily provided with an assembler in which the slug forming matrices are assembled into line-forming order. A longitudinally slidable assembler bar is associated with the assembling mechanism and as the matrices move to the assembling postiion, the slide bar also is moved to control the length of the line being composed. Frequently, as the matrices move into the assembling position, they impart to the slide bar enough movement to cause an objectionable looseness between the matrices already assembled, this looseness causing vibration and misalignment of the matrices. Often such looseness will result in transposition of the letters with consequent error in the printing or the requirement of the operator to remove the misplaced matrix and insert the same in the proper position. This results in a loss of time or incorrect printing.

The primary object of the invention is, therefore, to provide means for preventing the looseness between the matrices in the assembling position.

It is also an object of the invention to provide means for applying a limited frictional drag to the assembler slide bar during its forward movement so that the looseness between the matrices will be eliminated.

Another object of the invention is to provide mechanism for applying friction to the slide bar during its forward movement. This mechanism is provided in combination with the conventional lock used to prevent rearward movement of the slide bar during the assembling operation.

A further object of the invention resides inthe provision of the brake shoe adapted to engage the slide bar and a weighted lever to move the brake shoe into engagement with the slide bar, the lever being operated by the lock releasing mechanism of the machine to move the brake shoe out of engagement with the slide bar at the completion of the line-forming operation.

A'still further object of the invention resides in the provision of a self-contained attachment which may be readily applied to typographical machines now in use for the purpose of applying friction to the slide bar during the assembling operation.

For a further understanding of the invention, reference is to be had to the following description and the accompanying drawing in which is dis closed the. invention in its preferred form.

1938, Serial No. 194,623

In the drawing:

Fig. 1 is a front elevational view of the assembling elevator and the associated mechanism of a typographical machine, the same being provided with the friction applying mechanism forming the subject matter of the present invention;

Fig. 2 is an enlarged front elevation of a portion of the mechanism shown in Fig. 1;

Fig. 3 is a vertical transverse sectional view on the plane indicated by the line IIIIII of Fig. 2.

Referring more particularly to the drawing, and especially to Fig. 1, the numeral 1 indicates the assembling elevator of the typographical machine. The elevator is disposed adjacent the lower end of the matrix delivering belt 2, the latter moving along the bottom of the magazine 3. At one side of the elevator and below the belt 2, there is provided the usual assembler slide bar i. This bar is mounted for longitudinal sliding movement through the elevator I and is provided at its forward end with a stop 5 against which the matrices to be assembled are positioned. At the lower end of the belt 2, a rotatable star wheel 6 is provided to move the matrices into assembled order, this movement also being imparted to the slide bar t. To prevent rearward movement of the slide bar, a lever l is pivoted to the frame of the machine, this lever having lock blocks 8 secured to the lower ends thereof, one of the blocks being positioned at the top of the slide bar and the other beneath the slide bar. When the slide bar tends to move rearwardly, the blocks 8 will engage the same and since the blocks are positioned slightly in advance of the pivot for the lever, a gripping action between the slide bar and the block will produce abinding effect on the bar and rearward movement will be precluded. When the line has been completely assembled, the elevator i will move upward to deliver the line to another part of the machine as is usual with machines of this kind.

Prior to the final stage of upward movement of the elevator, a shoulder 9 formed at the lower end thereof will engage one end of a lever Hi pivoted as at H and the opposite end of the lever will move downward into contact with a screw !2 carried by the outer end of an elbow-shaped lock releasing member 53. The member !3 is fulcrumed as at M and the upper end thereof en gages the lever 'l. When the lever l0 engages the screw it and swings the member it, the upper end will impart movement to the lever l to release the blocks 8 from engagement with the slide bar. This will permit the bar to move to its retracted position in response to a spring operated lever l5.

The mechanism thus described is of conventional form and a further discussion of the same is believed to be unnecessary. It will be apparent, however, that as the matrices move from the belt to the assembling position, they will impart a slight jar to the slide bar, causing it to move forward an extent greater than required for the positioning of the matrices. This will permit a looseness between the matrices and they will tilt or separate at their upper ends and additional matrices moving to the assembling position may become misplaced. The mechanism about to be described has been provided to prevent the shock of the incoming matrices imparting movement tothe slide bar and will permit the same to move only in response to the action of the star wheel. To carry out the invention, there is provided a bracket it which is secured by screws II to the framework of the machine and has guide means l8 formed for the reception of a pin l9. The pin I9 is disposed in vertical registration with the slide bar and has its upper end positioned in an opening formed in a brake shoe 20. The upper surface of the brake shoe has secured thereto a resilient pad 2i for engagement with the under side of the slide bar. The lower end of the pin l9 engages the upper surface of a lever 22 pivoted as at 23 to the bracket is. One end of the lever 22 carries a. weight 24 which is suspended from the lever by means of a wire hook 25. Since this weight is attached to the lever on the opposite side of the pivot from the point engaged by the pin l9, the Weight will exert upward pressure on the pin and the brake shoe and pad will be held against the slide bar. This will provide a limited amount of friction to the bar and the same will be prevented from moving forward while the matrices move into the assembling position. The friction is not great enough to prevent the bar from moving in response to the action of the star wheel. The other end of the lever pro jects considerably beyond a point where the pin engages the same and is positioned in registration with the end of the member l3. The lever 22 is provided with a screw 25 by means of which the space between the end of the lever and the member l3 may be varied to cause the proper timing of the release of the brake.

When the elevator moves upward upon the completion of the assembling operation and the lever It! moves the member i3 downward to effect the release of the lock, the end of the member It will engage the screw 26 and move the longer end of the lever 22 downward. This will permit the brake shoe to move away from the slide bar and the same may then move freely to its starting position. In vertical registration with the brake shoe 20 and above the slide bar, there is provided a stop 2? which will prevent the slide bar from moving upward when the brake 2%! is applied. During use of the machine, if it becomes necessary to release the lock 8, the lower end of the member I3 is pressed downward. This will release the lock and at the same time move the brake shoe 25 away from the .slide bar to completely release the latter. In the event it is desired to release the load of weight 24 only from the brake 29, the longer end of the lever 22 may be moved downward. This will have no effect on the member IE or the lock 8. The brake shoe 20 may be removed for the purposes of cleaning the slide bar or renewing the pad 2! by moving the longer end of the lever 22 downward.

What is claimed is:

1. In a typographical machine of the type having an assembler slide bar, lock means for preventing retractive movement of the slide bar during the matrices assembling operation, and means for releasing said lock means, a shoe movably supported adjacent said slide bar, a lever pivoted intermediately of its ends adjacent the support for said shoe, and a weight provided at one end of said lever and operating to move said shoe into engagement with said slide bar, the opposite end of said lever being engaged by said lock releasing means to move said shoe away from said slide-bar upon the operation of releasing said lock means.

2. In a typographical machine of the type having an assembler slide bar, lock means for preventing retractive movement of the slide bar during the matrices assembling operation, and means for releasing said lock means, a bracket secured; to said machine adjacent said assembler slide bar, said bracket being provided with guide means in registration with said slide bar, a member movably supported in connection with said guide means, a brake shoe provided at the upper end of said movable member, a lever pivotally supported intermediate of its ends on said bracket and engaging the lower end of said movable member, and a weight suspended from one end of said lever and operating to move said brake shoe toward said slide bar, the opposite end of said lever being positioned in the path of movement of said lock releasing means. 7

3. In a typographical machine of the type having an assembler slide bar, lock means to prevent retractive movement of the slide bar during the matrices assembling operation, and means for releasing said lock means, a bracket secured to the machine adjacent the slide bar, a lever pivoted intermediately of its ends on said bracket, guide means formed on said bracket adjacent the pivot for said lever, a member supported in connection with said guide means for movement ber engaging said lever at one side of the pivot therefor, a brake shoe provided at the upper end of said member, a weight carried by the end of said lever at the opposite side of the pivot, the other end of said lever being disposed in the path of movement of said lock releasing means, and means for varying the spacing between the end of said lever and said lock releasing means.

4. An attachment for typographical machines comprising a bracket, a lever pivoted intermediately of its ends on said bracket, guide means provided on said bracket adjacent the pivot for said lever, a member movably supported by said guide means, a brake shoe provided at the upper end of said movablemember, the lower end of said member engaging said pivoted lever at one side of said pivot, and a weight carried by the end of said lever on the opposite side of said pivot, the opposite end of said lever extending a substantial distance beyond the point engaged by said movable member.

5. In a typographical machine of the type having an assembler slide bar, a lock for preventing retractive movement of said bar during the matrices assembling operation, and means for releasing said lock, in combination with means for applying a frictional drag to said slide bar during the assembling operation, said last-named means being rendered inoperative upon the release of said lock.

IRWIN G. STEIN.

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