US1256014A - Adjustable gage-pin for tympans. - Google Patents

Description

J. R. GROVE.

ADJUSTABLE GAGE PIN FOR TYMPANS.

APPLICATION FILED 020.22.1911.

1 56911 1 Patented Feb. 12, 1918.

JACOB ROHB GROVE, 0F LVIAN$FIELID, PENNSYLVANIA.

ADJUSTABLE GAGE-FIN FOR TYMPANS.

Specification of Letters Patent.

Patented Feb. 12, 1918.

Application filed. December 22, 1917. Serial No. 208,501.

To all whom it may concern:

Be it known that 1, Moon R. Gnovn, citizen of the United States of America, and resident of Mansfield, Tioga county, Pennsylvania, have invented new and useful Ad justable Gage-Pins for Tympans, of which the following is a specification.

The object of this invention is to provide an improved construction for gage-pins for tympans especially adapted for use on platen printing presses.

A further object of this invention is to provide an improved construction for gagepins adapted to receive and support a stripper for longitudinal movement therein.

My invention consists in the construction, arrangement and combination of elements hereinafter set forth, pointed out in my claims and illustrated by the accompanying drawing, in which- Figure l is a plan illustrating a blank from which the base member of my improved gage-pin is made. Fig. 2 is a plan illustrating the completed gage-pin together with the stripper mounted for adjustment therein, the tool being shown in connection with a portion of a tympan. Fig. 3 is a front end elevation of the device shown in Fig. 2.

The gage-pin proper or base member of the device preferably is made of a single piece of sheet metal by stamping, folding or bending, and in the construction thereof a blank shown in Fig. 1 preferably is employed. The blank is generally rectangular in shape and comprises a transverse head member 10 having a centrally arranged rectangular opening 11. The blank also is formed with spaced parallel prongs 12, 13 extending at right angles to and spaced from the ends of the head member 10 and said prongs are formed with opposing notches 14, 15 in their inner margins and adjacent the outer ends thereof. The blank also is formed with a central prong 16 between, spaced from and of greater length than the prongs 12, 13, which central prong also is at right angles to the head member 10. The outer end portion of the central prong 16 of the blank is attenuated or sharpened. The blank is further formed with V-shaped pointed or triangular lugs 17 18 projecting from the rear margin thereof adjacent to and slightly spaced from the outermost margins of the prongs 12, 13. The blank is adapted to be bent on a dotted line 19 into a position so that the head member 10 will stand at right angles to the position in which it is shown in Fig. 1 and at right angles to the plane of the prongs. During such oper ation of bending the lugs 17, 18 are turned into a position at right angles to the position in which they are shown in Fig. 1 so that they project from and at right angles to the plane of the prongs. The blank is adapted to be bent on dotted lines 20, 21 so that end portions of the head member 10 will be turned into at right angles to the body of the head member and projecting laterally therefrom. The blank is further adapted to be bent on dotted lines 22, 23 so that end portions of the prongs 12, 13 are turned into positions forming acute angles with the body of said prongs and being opposed to and spaced from the out-turned head member.

A stripper 24cis slidingly mounted in the notches 14., 15 of the prongs 12, 13 and is formed with laterally projecting lugs 25, 26 at one end adapted to engage the outturned end portions of the prongs and prevent withdrawal of the stripper in one direction. The stripper 24 is formed with a centrally arranged longitudinally extending tongue 27 slidingly mounted in and extending through the opening 11 of the head member 10. The tongue 27 further connects the stripper to the base member and serves to overlie a marginal portion of a sheet being printed'in a press with which this device is associated and employed. The stripper 24 is adjusted longitudinally of the base member by hand to fix and determine the degree of projection of the tongue 27 with respect to the desired margin of a sheet being printed.

In practical use this device is mounted singly or in multiple in desired relations on a tympan, a fragment of which is shown in Figs. 2 and 3 and indicated by the numeral 28. Each device is mounted on the tympan manually by engaging and penetrating the tympan with the attenuated, pointed and sharpened end of the prong 16, said prong being passed through and beneath the tympan to the degree indicated and determined by the operator necessary so to locate the head member 10 that it will serve as a stop or gage positions approximately for a sheet to be printed. Such arrangement and location of the prong 16 moves said prong slightly out of the plane of and inclined relative to the prongs 12, 13 and I employ a material somewhat resilient in character so that in such position there will be a tendency on the part of the tool, by reason of composition of forces to hold the tool in the position in which it is adjusted manually by friction. with the tympan. This efiect also is sustained by friction of the prong 16 on the platen beneath the tympan.

The lugs 17, 18 are pressed into the tympan and give stability to the location of the tool, especially in respect of pivotal movement on the penetrating connections of the prong 16 with the tympan. Then the stripper 24: is adjusted manually to give the desired penetration to the tongue 27 and the device is ready for use in operating the printing press with which it is associated.

I claim as my invention 1. A blank for gage-pins for tympans, which blank is generally rectangular in form having spaced prongs also spaced from the side margins of the blank, the central prong being of greater length than the side prongs and attenuated at its outer end,,the side prongs having opposing notches, the blank also having pointed lugs adjacent to the side prongs, the blank also having an opening in the center of its widest end portion, said blank being adapted to be bent at right angles at the base of the prongs and also being adapted to be bent at right angles adjacent to the ends of its widest end portion, said blank also being adapted to be bent on lines transversely of the outermost prong adjacent to the inner ends of the opposing notches of said prongs.

2. A gage-pin for tympans, comprising a head member, spaced guide prongs at right angles to the head member, the outer ends of said guide prongs being turned into the plane of the head member and formed with opposing notches, a pin prong of greater length than the guide prongs and located Genie: of this patent may be obtained tor a. A gage-pin for tympans, comprising a.-

head member, spaced guide prongs at right angles to the head member, the outer ends of said guide prongs being turned intothe plane of the head member and formed with opposing notches, a pin prong of greater length than the guide prongs and located be tween them, said head'member being formed with a central opening, said head member being also formed with sharpened lugs adapted to engage a tympan, end portions of the head member being turned out of the plane of the body thereof toward the outturned ends of the guide prongs.

5. A gage-pin for tympans, comprising a head member, spaced guideprongsat right angles to the head member, theouter ends of said guide prongs being turned into the plane of the head member andiormedwith opposing notches, apinprong of greater length than the guide prongs and located between them, said head member being formed'with a central opening, saidhead member bemg also formed with sharpened lugs adapted to engage a tympan,'1n' comb1? nation with a stripper slidingly mounted insaid notches and opening, said stripper being formed with a tongue projecting beyond the head member and adapted to overlie I sheet being printed.

Signed by me at Mansfield, Pennsylvania, this 24th day of J anuary,'1917 i JACOB Bonn enovn.

Washington, D. G.

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