US1656639A - Slug-trimming mechanism - Google Patents

Description

Jan. 17, 192,8. 1,656,639

G. P. KINGSBURY A SLUG TRIMMING MECHANISM Filed 001;. 4. 1926 2 Sheets-Sheet 1 Jan. 17, 1928-. 1,656,639

G. P. K1NGSBURY SLUG TRIMMING MECHANISM Filed Oct. 4. 1925 2 Sheets-Sheet 2 INVENTOR Patented Jan. 17, 1928.

UNITEDSTATES Partnr orties.

enonen r. :rinesnonn or new Yonir, u. Y., nssienon To rennen NTHALER LINO- TYEE CQMPANY, A CGRERATON @Fill-EV? YORK.

SLJiG-TRMMING MECHANSVM.

Application llled ctober 4, 1926. -Seral No. 139,260.

My invention relates to typographical casting1 machines, such as .linotype machines ofthe general organization represented in S. Letters Patent No. 436,532 to O. Mer genthaler, .wherein type bars or slugs are cast in arnold and "then ejected therefrom between tivo trimming knives, which insure the parallelism of their opposite Iside faces and the exact thickness required. One of these knives is adjustably mounted in order that the distance between the two may be varied at Will to accommodate slugsof different thicknesses. More particularly, it relates to a slugtrimming,` mechanism of the type shown and described in the U. S. patent to Da S. Kennedy, No. 1,002,281, Wherein the adjustments of the knife are effected against spring tension by means of a rotary sector plate operated by hand and having a series of transverse concentrically arranged screw studs which project dill'erent distances from the inner face thereof and which thus determine the extent of the adjustment desired. ln the pending applica tion of Samuel Smith, Serial No. 84,659, tiled January 27, 1926, means are provided whereby theksector plate or gauge `member may be relieved of spring pressure during its rotary adjustment to avoid excessive Wear on the parts, although the operator is re quired to use both bands for effecting-each adjustment of thcknives.

The present invention is directed to certain improvements in the structure shown in said Smith application and contemplates a simp-lilied arrangement of the parts Aand'onc which will enable the knives to be adjusted by the use of one hand instead `of tivo. The exact manner in which this has been accomplished will best be understood from the detailed description to follow.

lu the accompanying drawings, lA have shown my invention nie-rely in preferred .form and by way of example, but obviously many changes and variations may be made therein and in its inode of operation, which will still Abe comprised Within its spirit. Generally speaking, I desire it to be understood that the invention .is not limited to any speciiic form or embodiment, except in so far as such limitations are specified in the claims.

Referring to the dravvings:

, Fig. l is a front elevation of the knife block equipped 1with the present improve- 5.5

ments;

Fig. 2 isa horizontal section taken on the line 2-2 of Fig.- l; i

n. n. l l big. e .is a vertical section taken on the line SW3 of 2; 1 z

t Fig. llis aldetail perspective View of the front Vsection ofthe knifebloclr; `Fig. V5 `is aperspectivei view of a knife `block showin# the improvements in .modilied'form; arid v Fig. 6 is an enlarged central horizontal section of the knife block shown in Fig. '5.

As best shown in Fig. 2, the adjustable knife A is fastened by seres/'sra to a slide B and arranged kopposite to and parallel with the ned knife A1. For manufacturing rcasons,`the slide B @is made in two Sections B1, 132, and mounted to move horizontally in `a supporting` frame C bolted rigidly to the main frame of the machine. ln its front face, the` section B1 is formed with a pair 'of superposed `horizontal grooves or recesses'l3 adapted to accommodate spiral springs Bvvhich bear against integral projections c on the lifted Aframe C and urge the slide constantly endwise toward the right to move the knife A away from the opposing knife A1. A Vrotary sector plate or `gnge member D is employed to sustain the knife A in its different adjusted positions, :the said member beingI provided with a series 'of concentrically disposed screw studs D1, which project `different distances from the inner thereof and are arranged to selectively engage a hardened stud B5 attached to the adjacent end of the slide B. As a result, the knife A is caused to stand i-n-one .position or another, accord` f ing` to the particular screw stud in action. The parts so far described, their construction and mode of operation, except as vwill be hereinafter pointed out, are or may be suliistantially the saine those presented in Vthe Smith application above mentioned. l

Accordingv to thepresent invention, unfitary means are provided whereby the gauge member tirst relieved oiE the pressure enerted by the springs B4, then unlocked, and finally adjusted to any selected position. In

`the preferrral embodiment illustrated, such means consist of a knurled turning knob or handle E formed with a beveled clutch suriface E and which is mounted tor axial niovenient on a horizontal spindle F to make and break connection with the rotary gauge tuember D. EL compression spring- E2, seated against the knob, serves to maintain the lat ter resil ently against a retaining screw F1 on the outer end of the spindle l? and normally engaged with a key F2, secured to said spindle. The spindle F is journaled in a lulcrnin pin D2 tor the gauge member D and is provided at its inner end With a threaded portion lii which is arranged in constant engagement 'sith a nut BG projecting 'from the knite slide B through a slot C1 in the i-:upporting trame C. The knob lil is, in this way, operatively connected to the knife slide and by its rotation will cause the latter to be moved into or out of engage- ;nent with the gauge member D. It is desirable that the movement of the knife slide away from the gauge member be limited in order to indicate to the operator when the hardened stud B5 stands clear ot' the longest one ot the screw studs D1. For this reason, the slide B is further provided with a stop pin B7 arranged adjacent the nut. B and adapted at such time to Contact with the threaded portion Fg ot the spindle F to stop :"he slide in its retracted position.

The device herein employed for lockingV the gauge member D in its different adjusted positions (see Fig. 2) comprises a plunger G resiliently mounted in a recess C2 formed in the supporting traine C and provided with a pair ot studs G1, G2, the stud G1 bearing against one end et' a sleeve D3 which is loosely mounted on the tulcrum pin D2 and connected by a key pin D4 to the gauge meinber D, and the stud G= cooperating with a series of holes or recesses D5 disposed around the inner tace of the gauge member D. These recesses D"l are arranged diametrically opposite to their respective screw studs D1 so that each will always register with the stud G2 when the corresponding screw stud D1 is brought into operative relation with the hardened stud B5 of the knife slide. It will be noted that the plunger G is also provided with a spline G? which serves to keep the studs G1, G2 properly located at all times'. At its outer end, the sleeve D3 is formed with a beveled clutch surface DG for engagement with the corresponding clutch surface E1- ot the turning knob E, and is also capable ot endwise movementen the fulcruln pin D2 to shift the plunger G in unlocking the gauge member.

To aid the operator in adjusting the knife tor trimming slugs ot' different thicknesses and to indicate the adjustments they are. effected, a pointer H is provided which, in the present instance, is fastened to the 'frame C and arranged {iush with the peripheral edge ot the rotary gauge member D, the

latter being provided with marks or graduations D7 to be read in connection with the pointer `(see Fig. l).

itccording to the foregoing' arrangement, when it is desired to adjust the knife ik, the knob E .is turned clockwise until the slide B through the screw F3 and nut B is moved clear ot the gauge member D and stopped in its retracted position by the pin PT. The knob then pushed axially along the spindle F into engagement with the sleeve Da and forces the latter against the traine C. This arial movement oi' the knob disengages it from the key F2 so that it may be turned independently ot the spindle F, also shii'ts the plunger G to \\\'ithdraw the locking stud G2 trom the recess D5 ot the gauge member D, and iinally, through the engagement of the clutch surfaces D and El, establishes an operative connection between the knob and the gauge member. The gauge member may new be *freely turned about the tulcrum pin D2 and set in any selected position with the aid of the graduation marks DT and pointer il. Thereafter, the in'essure of the knob is relieved to permit the plunger stud G2 to reioel; the gauge member in its newly adjusted position, and the knob to diseuguge the sleeve l)li and to reengago the key F2. 'lhe spindle li is then turned by the knob until the hardened stud li on the knife slide B lninksr against the selected screwl stud D1 ot' the rztuge member.

Attention is now diria-ted to Figs. and t3, 'which illustrate an alternative embodiment. Vln this instanre, :i tace cani 'lity iccured to the inner end oi the spindle F and cooperating with a stud lds l'n'otruding :from the knife slide ll, is enililoyed instead ol the screw and nut previously described to` retract the slide and relieve the sector plate er gauge member D et spring pres sure, preparatory to its; zuljustnienl. The turning knob lil is constantly rronnerled to the spindle by a transverse pin P5 and slot lil but is capable ol arial movement thereon, as be'lore, to unlork the gauge member D and eli'ect an operative engagement therewith. The looking and unlof rking ot the gauge member is etlecl'od by means ot :i pin .l carried by the gauge member und normally projecting slightly beyond the inner iace thoreot to engagewithin one ol' a series ot recesses e concentirieall.i1 arl-mined in the supporting frame C and serving in the samtcapacity as the rece," es D oi the first cinbodirnent. The operation oi the looking pin .l is brought under the control ot the knob E by means ot a finger lil prtriecting laterally from the hub olvl the knob and which is adapted b v a partial turn o'l' the latter in a clockwise direction to outrage an annular groove T2 formed in the head per tion ol1 the locking pin. lt will also be noted (see Fig. 5) that the gauge nieinber appropriate i Sti hun

lijd

lli

l) is further provided with an auxiliary member DS secured to the outer face thereof adjacent the hub of the knob E.. `This member is cut away at its lower edge to clear the linger El' is the latter is rocked into-and out of engagement with the lock` ing` pin o, and is recessed D to accommodate both of said aart-s in their engaged condition. Consequently, when the knob E is pulled outwardly tothe position indicated by the broken lines inFig. t?, the linger lill withdraws the pin .l from its locking posi` tion and enters the recess D. The knob is thus` locked to the auxiliary member DE and an operative connection established with -the gauge member D, Which may now be freely adjusted by thekhob and set in anyselected position with the aid of the scale H1. The knob is then pushed inwardly to restore the pin d to its locking position and given a partial turn in the opposite direction to permit the hardened stud B5 of the knife slide to bank against the newly selected screu7 stud of the gauge member. f

As a feature of the arrangement last described, it is pointed out that the turning knob Ecannotbe operatively connected with the gauge member until the knife slide has been retracted and the springs B4 compressed. It may also lbe noted thatthe pitch of the face cam E"i will be determined by the gradually increasing distances the respective screw studs D1 project from the inner face of the gauge member l), so that in adjusting the sector plate from a high measure, say 4l() point, to a lower measure, the cam will continue to retract the knife slide and thus enable its hardened stud B5 to clear the longer screw studs D1, In other Words. the :initial turn of the knob E, which ,is limited by the engagement of the linger lrlt with the locking pin J, is intended only to relieve the sector plate of thepressure 'ated by the springs B4 and the spaced relation thus established between the stud lf' and the respective studs D1 must be consistently maintained by the cam F4 during the adjustment of the sector plate in either `direi-,tion in order that a corresponding turn of the knob in the oppostedireetion will suh'ice to insure the reengagement of the stud B5 with the selected screw stud D1.

Having thus described my invention, 'its construct-ion `and inode of operation, what I claim and desire to secure by Letters Patent of the United States is as follows:

l. In a slug trimming mechanism, the

combination ofi/an adjustable'gauge member,

a knife slide normally engaged therewith, and unitary means for breaking the engagement of the slide with the gauge member and for effecting the adjustment of the latter.

ln a slug trimming` mechanism, the combination of an adjustable gauge memdescribed.

ber, a retractable knife slide resilient-ly ens` gaged therewith, and asinglc operating han-` gauge member, means forlocking the latter in its adjusted'.positlons, a `'.i'prn'ig .actmgto maintain the knife slide in operative engagement with said gauge member, and unitary means ivnereby the gauge member may be relieved of the spring pressure of the knitl slide, unlocked and then adjusted.

5. In a slug` trimming mechanism, the combination oi' a rotary adjustable gauge member, 4a retractable knife slide normally engaged therewith, means for locking said member in its adjusted positions, and a turning knob adapted by its rotation to retract the knife slide, said knob being movable axially to unlock the gauge member and effect an operative engagement therewith,

6. n a slug trimming mechanism, the

combination of an adjustable gauge member,

a retractable knife slide normally engaged therewith, and anoperating handle normally connected to the slide forcontrolling the movements thereof, said handle being movable to break its connection With` the slide and to make operative connection with the gauge member.

7. In a slug1 trimming mechanism, the combination of a rotary adjustable gauge member, a retractable knife slide normally engaged therewith, and a turning knob connected to the slide to control the movements thereof, said knob being movable axially and formed with a clutch member adapted by such axial movement to engage a cooperating clutch member on the gauge member.

`8. In a slug trimming.mechanism, the combination of a rotary adjustable gauge member, a knife slide resiliently engaged therewith, a. turning knob for setting the gauge member in different adjusted positions, and means controlled by the knob 'for retracting the slide preparatory to the adjustments of the gauge member.

9. ln a. slug` trimming mechanism, the combination of an adjustable gauge member, retractable knife slide normally engaged therewith, an operating handle for retract inf?` theknife slide preparatory to the ad justment of the gauge member, means whereby the handle may be operatively connected parts, as and for the purposey to said gauge member, and locking means to prevent the adjustment of the gauge member, said locking means being arranged vto be disengaged by theoonnection of the han dle to the gauge member.

l0. In a slug' trin'iming mechanism, the combination ot' a rotary adjustable gauge member, a retractable knife slide resiliently engaged therewith, a turning knob for setting` the gauge member in different adjusted positions, and means operable bya partial turn of the knob relatively to the gauge member for retracting the slide preparatory to the adjustment of said member.

11. In a slug trimming mechanism, the combination of arotary adjustable gauge member, a turning knob normally disconnected from said member, and means controlled by a relative movement of said parts to establish an operative connection between them.

12. In a slug trimming mechanism, the combination ot :i rotaryT adjustable gauge member, a pin for locking it in its adjusted positions, a turning knob movable axially into and ont ot operative engagement With the gauge member, and a member engaging said pin and adapted by the axial movement of the knob to lock and unlock the gauge member as desired.

In testimony whereof, I have affixed my Signature hereto.

GEORGE P. KINGSBURY.

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