US1509233A - Platen-press gauge - Google Patents

Description

spx. 23. am. l n 1,509,233

a. fr. GARDNER A PLATE" PRESS GAUGE Fixed Auz. 31. 1923` INVENTOR.

BY LLUIS T- EHRNEH.

ATTORNEY Patented Sept. 23, 1924.

UNITED stares LEWIS T. GARDNER, or OAKLAND, oaifronlvrli.

PLATEN-PRESS GAUGE.

Application filed-August 31, 1923. Serial No. 660,401.

TouZZy whom it muy concern.' l

Be it known that LLEWIS TAYLOR GARD- Nn1t, .a citizen ofthe United States,residing at Oakland, in the 'county of 4-lalnieda and State of laliflornia, have invented new and useful Improvements in Platen-Press Gauges of which the following is Va specir cation.

`'This invention relates to improvements in platen press gauges andhas particular reference to a gauge adapted to be attac-hed to the `tympan paper of a 4printing press for the A.purpose of aligning a sheet of paper upon which animpressionis to be made.

`The principal object of'y this invention is to produce a gauge Which is sturdy in construction, simpleto manufacture and Well Within the purchase price of the average user. y p, .p 1

ystill further object is to produce a gauge which when positioned upon the `tympan paper Will not become displaced.

Another object is to provide means Whereby it is'impossible for the paper being fed to the gauges to become caught in the same.

Another object is to provide an adjustable retaining finger which will maintain itself at all times in an adjusted position.

Other objects and advantages Will be ap-` parent during the course 'of the following descri tion. l

In t e accompanying drawings forming a part of .this specification, and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is a fragmentary vieuT of a tynr pan sheet having my gauges atached thereto and retaining a sheet to be printed,

Figure 2 is a vertical cross section of my device in unlocked position,

Figure 8 is aV vertical cross section of my device in a reversed position and locked to v a tympan sheet,

Figure 4 is a side elevation of one of the retaining fingers,

Figure 5 is a perspective view of the. linger retaining block,

Figure 6 is a perspective view of the clamping member, and t Figure 7 is a perspective view' of the clamping cam.

Many gauges have been devised, Which gauges often failed to accomplish their purpose through insufficient clamping and consequent slipping o-f the paper; they have also, in many instances, failed through the fact that the paper being fed would become caught -in the gauge and in many instances have been of such Weak construction that they have been easily bent or crushed.

Al have therefore sought to produce a gauge which is of sturdy construction, one which may be easily locked and one ivhere it is imposible for the paper being fed` to become caught. t Y

In the accompanying drawings wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 5 designates the tympan sheet and thenumeral 6 the sheet of 'paper being fed to the press, While.v at 7 l have shown a bloc-k having a dove-tail groove 8 formed in vthe upper surface thereof. This block has its rear portion provided with an over-hang 9, the purpose of which Will be later seen.

A curved retaining finger 11 is adapted to be slidably held in the dove-taily-groove Sas shovvn in F igurcs 1, 2 and 3. The clamping member 12 is formed of a flat portion having an upturned end 13, and upturned side pieces 14 and 16. These side pieces are each provided with a slot as shown at 17 and 18 for the reception of the reduced portions 19 and 21 of the clamping cam 22.

A pivot. pin 23 serves to secure the block 7 to the clamping'member 12 and at the same time the over-hang portion 9 of the block 7 serves to retain theclamping cam Within the slots 17 and 18. An operating handle 24 formed integral with the cam 22 serves to manipulate the same.

The pin 23 is provided with a head 26 (see F 1). This head is adapted to lie between the side piece 16 and the operating lever 24. This. arrangement prevents the accidental removal of the pin and yet permits of a reversal of the operating lever as Will be later shown.

In operation a slit is made in the tympan paper as shown at 27, through which the curved end 13 of the clamping member 12 is placed. This brings the block 8 upon the top of the tympan paper and after the same has been moved to an adjusted position the lever 24 is moved from the position shown in Figure 2 to that shown in Figure 3 so as to cause the cam 22 to abut the over-hang 8 and the rear end of the clamping member 12, thus efficiently clamping the portion of tympan paper between the block and the clamping member.

By viewing Figure 3, it will be noted that the curved portion 13 causes the tympan paper to curve upward slightly with the result that any sheet fed will abut against the end of the block 7 and cannot therefore become caught.

The fngerll may now be adjusted by moving the same in the dove-tail slot in accordance with the wishes of the operator. Should the operator desire to reverse the clamp so as tobring the operating lever upon the opposite side of the gauge he moves the lever to the vertical position of -Figure 2, removes the pin 23 lifts the block 7 and reverses the position of the cam so that the operating lever will lie upon the opposite side of the clamping member. The

parts are again replaced in such a manner that the head 26 of the pin 23 will be on the side adjacent the operating lever.

It will thus be seen that I have provided asimple clamp and one which will accom-` plish all of the objects above set forth.A i.

It is to be understood that the form of my invention herewith shown and described is to be 4taken as a preferred example of the same, and that various changes in the shape, size and arrangement of parts may be resorted tol without departing from the spirit of the invention or the scope of the subjoined claims.

a block having a dove-tail slot formed vinv the upper surface thereof, a curved finger slidable in the dove-tail slot, anover-hang formed on said block, a clamping plate pivoted to said block, a cam interposed between said clamping plate and said over-hang and means for operating said cam for the purpose of moving said clamping plate toward said block through a greater portion of its length.

3. In a gauge of the Character' described, a block having' adove-tail slot formed in the upper surface thereof, a curved finger slidable in the dove-tail slot, an over-hang formed on said block, a clamping plate pivoted to said block, a cam interposed between saidv clamping plate and said over-hang,` means for operating said cam for the purpose of moving said clamping plate toward said block through a greater portion of its length, said clamping plate havingits forward end curved toward said lfinger.

In testimony whereof I affixpmy signature.

nnwis T. GARDNEa :sol

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