US1178598A - Trimming mechanism for linotype-machines. - Google Patents

Description

H. PETERSEN.- TRIMMING MECHANISM FOR LINOTYPE MACHINES.

APPLICATION FILED SEPT. a. 1915.

I 1,178,598. Patented Apr. 11, 1916.

knife, these adjusting screwsgbeing associ- I desired position,

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TRIMIVIING momma ron' ririiorrrn-irnenmns.-

messes.

Specification of Letters Patent.

Application filed September 3,1915. Serial No. 48,814.

To all whom it may concern: I Be it known that I, HANS Pnrnesnn, a citizen of the United States of America, residing at Davenport, in the county ofScott and State of Iowa, have invented certain new and useful Improvementsin Trimming Mechanism for Linotype '-Machines, of which the following is a specification. This invention relatesjto improvements in a trimming mechanism'for a'linotype machine, for shaving the roughenedsides' of the printingslugs after their delivery from theniold in which they are cast] r f It has been proposed in the present art to provide an adjustment for the knife termed the stationary knife, but this adjustment has generally been in the form of an adjusting screw to adjust the knife, but in a 4 single direction, after which the knife-is held on its seating by means of a-transverse fastening member. I am'also aware that it has been proposed toplace a resilient'member behind the so-called stationary knife, acting in a direction opposite to an adjusta ing screw, but this has proven to be only a slight advantage over the form Where no spring is used, as the spring merely acts as a follower for the knife whenthe holding screws are released, and constitutes no positive means for rigidly holding the same in its adjusted position. I 1

It is the purpose of the present invention vto provide adjusting .members for the so called stationary knife engaging opposite parts thereof, the adjusting members operating in directions opposite to each other, so that the knife may be positively adjusted, and rigidly retained in its adjusted position; the knife when adjusted is what might be termed stationary.

Structurally speaking, the preferred. embodiment of the invention capable of obtaining the results above stated, comprises a pair of threaded adjusting screws arranged to engage opposite portions of the ated with the knife block, so that'it is only necessary to raise or lower the screws to the after which the knife is positively heldby the'adjusting screws. I

In the accompanying drawing, I have P tened to the knife block 1 at of, these plates affording. seating means for V transverse fastening nar ly used.

Patented Apr-.11, 1916. 1

represented the knives as constructed and- "7 adapted to be applied tothe ordinary lino- I type machine, but it willbe readily understood that the cutting mechanism may be varied in design,rform and size and applied to any special type of'machine without de-- partmg from the invention.

,In. the drawings: Figure '1 tion of the device; andFig. 2 is an end view of the same. 1 Referring more particularly to the draw-1vv 1 ings, wherein likenumeralsindicate cor- "responding parts the numeral 1 designates what is commonly known as the knife block of a linotype machine, having a cut-out poris a side eleva-;

tion 21in its face to provide a-seat for the I movable knife 2,and an outstanding flange 3 adapted tooverlie the knife. The movable knife 2 jpositioned; within the cut-away portion. 2 is capableof an adjustment by means of the adjusting screws or bolts 5, one of these screws or bolts being placed so that they operate on the knife near each end thereof and having threaded shank portions 6 passing through the threaded aper- "tures 7 intheoutstanding flange 3. The ad-- justing screws are entirely disconnected from the knife-and merely bear against the upper portion thereof, and at their extreme outer ends are greatly reduced in diameter to provide shoulders 7" and reduced 'eXten-,, 1

sions 8upon which the gears 8 rest, these gears being retained in position by nuts 9. The knifeQ' isvadjusted to'the desired position by'nieans of the adjusting screws 5 and is held in said adjusted position by the springs 9 secured to the rear portion ofthe knife block in; any'suitable manner, and pass 7 through relatively wide transverse apertures 10 near each end of the knife block, the

free ends of the springs entering the slots or recesses 1 0' arranged 1n the lower portion of the movable rknife, so thatthis knife is at all screws, ,due to ngs. ,A pair of gib plates 11 are faseach end theretimes forced. against the adjusting the movable knife, and eliminating the screws that are ordiw the tension of the; adjusting- Overlying the outstanding flange 3 is the rotating gear 11, having a plurality of teeth on its periphery and at opposite ends thereof engaging the gear wheels 8 rigidly fastened to the adjustable screws 5, so that the.

knife is adjusted to the desired position by a rotary movement of the said gear 11, after which the gear is retained in position by a lockin in 12 assin therethrou 'h and to p t) 3 enterin the flan e aortion ofthe knife block.

' While the movable knife and its adjustments are preferably constructed in accordance ith the above description, I Wish it to be clearly understood that many changes and modifications to this adjusting mechanism and knife can be made without departing from the invention.

The other knife block 12 1s spaced a slight distance from the block 2 and carr1es a so called stationary knife 13, this knife also i the passage of the printing slugs between the knives. in order that the statlonary be seen that when by means of adjustable screws 17.

-which pass through the t being spaced from the knife 2 to allow knife may operate successfully with the different parts of the machine subject to wear and tear at all times, it has been found that the only way in which good results can be obtained is by allowing this knife to have'a slight adjustment,'after'which itmust be rigidly retained in its adjusted position, so

that no movement thereof is permitted; The

' knife 13 is movably fastened to the outer face of the knife block 12, and is adjusted to any pos tion by means ofthe ad usting screws 14 threaded 1n the apertures 15 arranged in the outstanding ears or lugs 16 projecting and the relatlvely long from the knife block,

The adjusting screws l-i-bear against the lower portion of the knife, constituting a movable seat therefor,

and the relatively long threaded screws 17 18 in the flange 3, contact with the opposite portion of the knife and prevent any upward movement of the same after its adustment. A palr of transverse fastening screws 19 pass through the enlarged apertures 20 in the block, the said apertures 'bemg of such width as to allow the vertical adjustment of fastening screws therein, the

outer end of the fastening screws engaging the knife to assist in retaining the same on its seat, the said transverse fastening screws being similar to those now in use. It will the knife 13 is adjusted, the adjusting screwsabove described, it is positively retained and held rigid in its adjusted position, in view of the fact that the adjusting screws rest upon different portions of the knife and operate in directions opposite to each other so that all 'movement of the knife is prevented.

It isevident that various changes might be resorted to 1n the form and arrangement nreaded apertures 'ity of adjusting screws carried by said blocks and en a in the knives for retaining'the same in their various adjusted positions relative to each other, the adjusting screws'for one of the knives being oppositely disposed and carried by thesupporting blocks, the said adjusting screws engaging the upper and lower portions of the knife to positively support the same in its adjusted position and prevent any bodily movement thereof.

3. A slug trimming mechanism for lino- 7 type machines comprising knife supporting blocks, a pair of adjustable knives thereon, means for adjusting said knives relative to each other comprising adjusting screws car ried by the supporting blocks, the adjusting screws for one of the said knives being oppositely disposed and engaging different portions of the knife to positively support the same in its adjusted position and pre vent any bodily movement thereof.

4. A slug trimming mechanism for linotype machines, comprising knife supper ing members, trimming knives thereon, a pin-- rality ofv adjusting screws engaging said knives for retaining the same in their various adjusted positions relative to each other, the ad ustingscrews for one of the knlves being oppositely disposed and en gaging the upper and lower portions of the knife to positively support the same in lts adjusted position and prevent any bodily movement thereof, and a resilient member adapted to engage the other of said knives to retain the same in its adjusted position.

5. A trimming mechanism of the character described comprising supporting members, a pair of separately adjustable cutters on said members, means for adjusting said cutters relative to each other, the adjusting means for one of the cutters comprising opposed members adapted to prevent move- 7 ment of the cutter in either direction relative to the other cutter and to bodily fit the same in its adjusted position, and the other of said adjusting means permitting the adjustment ofits cutter toward and from the other cutter.

6. Atrimming mechanism of the characthe other cutter; the other of said adjust- 1g ter described comprising supporting meming means permitting the adjustment of its bers a pair of separately adjustable cutters cutter toward and from the other cutter.

on said members, means for adjusting said In testimony-whereof I aflix my signature 5 cutters relative to each other, the adjusting 1 in the presence of tWo Witnesses. 1 7

means for one of the cutters adapted to sup- 7 HANS PETERSEN.

port and positively hold the same in its ad- Witnesses:

justed position to prevent any back and" CHARLES S. PRYOR,

forth bodily movement thereof relative t0 CAROLYN RAAB copies of this patent may be obtained for five cents each, by addressing :the "Commissioner of ,Iatents,

Washington, D. 0. x I r

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