US1245530A

US1245530A - Spacing-table machine.

Info

Publication number: US1245530A
Authority: US
Inventors: George Paul Thomas
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-12-30
Filing date: 1916-12-30
Publication date: 1917-11-06
Anticipated expiration: 1934-11-06

Description

G. P. THOMAS.

SPACING TABLE MACHINE.

Patented Nov. 6, 1917.

3 SHEETS-SHEET I Mom m m i m V THE m 6 a E Q 2 Q a O, m u. I- a S 5, W M Y W .L HUE G P. THOMAS.

SPACING TABLE MACHINE. APPLICATION FILED DEC.30|1916.

1 2%,530. Patented Nov. 6, 1917.

3 SHEETS-SHEET 2.

G. P. THOMAS.

SFACING TABLE MACHINE.

APPLICATION HLED DECK-30. 191s.

Patented Nov. 6,1917".

3 SHEETS$HEET 3.

INVENTOR Gnome 31m:'THQMAS QF GLENSHA ;@zanlmsYnvAmez "3 Q s ny" Lalfi te 'e rqPennsy Ya i'e bi of the a United States, have invented :or id ered vs ai l ew an sefuli ,l hro e-i s; i pi iilg f b eMaqhi esy'iii h improvements the following f'is {a specification"; 1

nimyus:,Leeers' raenwe15 795 5 re is sh a d des r bedi sp cin m1; .1 chinewhei einth cariiagefitself is providedjif witht o sets ojfgcoii dinated; locks, onef pp g e adie and. the bh t e bound nioven ient' ofv the 'car 'ia ge. Thelma chine also conte nplates, first,fan ja d vance ofi the carriage a 1 short uismne 'aft'e the stop ping parts have beenfbfought-into engagementfiitli each other, and seeo ndly,' a subs e-f I q en b ckw movemii ,c ti -sequ n d; stOPPi P int-t .c I .5 iii The 0b"ect of 'inyflpresjent invention is to? provide a spacing machine of the same geneml cter'a dio he e eral spur-J pose as that of theabove named patent, but l wherein the table is pijouided 1v ,fsto'ps 1 rather than havinglalljjtlie stopp ng' partsj '1 bor'ne' by the carriage A 'fui theiiobjectof my invention is; by inip ovingthe 'details' of j 1 construction of such machine, to i'nci easethe eiiicieney thereof. In thei accon panyingf sheets 0 drawingsf'j forming part1 fo'f' my specification I ghai ef" illustrated the preferred-embodiment of my jj invention. Figurel isfa top pla'n' Yiew themaehin'e; Fig. 2 a sideeleuation there of Fig. 3 a vertical sectional ,view'taken on I, the line II IIII ',QFig. 1 ;,Fig. 14:";1 sectional] View taken on th'edine 3; 5 a detail of construction ex lained: herein 1 after. Fig; 6 1 a cross-sectional f viewiof, a 1 modified foi'iii' of S aci g table; and T: a sectional View taken onthe' line VII-4W1,

the illustrativeembodimentfofi my invention, referring firstQto'Fi'gs. land '5,' in"" elusive, there {is shdjylifhut a' 'poztion of 'a p i' g i bl i ich m y, di dfm constructed of a horiiontalTc hannel l andjf sidechannels.2IfTQWhile' th afiiagemaybe' o tm fi di thefl?J r i pt r material to; 1 ffiieljited i 113 th'e foffil'er ari-angeiiient is illustratediheiieim' the "car i es ,cgn iv in ae a names; t j fi nd? a 5; amp *5 for enga ing' the mateiia1;' For "*movingfth'e earriage it'is provided fwith'ka w I p r I V y k w rot'atabl'y mounted sliaft 6 haviiig a pi-n-ion residing at Glenshawyiuth e county bi Allei 7 'secu'red 'to'it and which engages a rack 8 attached to the tjop' ,1 of the table. This? 'shaftniay beturnedhy a hand Wheel 93 01 -other'wise, as'd'esifed.

I f'th p'i'acti'ce df my iniiention the table has; seciiieditd it pluialityof stop ing ele' 'f' ments having oppositely dispesed stopping faces, and the carriage-is provided iivith' mova le 'engagers adapted to engage such oppositely disposed faee's *ofi'ithe' stop-' ing elements; 4 and thereby arrest -th'eiad-- "Vance mo-Yement of the earn-age as 1 wel'l a's -1ts-subsequentrebound moveinentl-- While various for'ins ofstopping elements v may: be used plf'efelj ably provide a detenfi baIFlQ having, on-its uppen'face, teethWitl-i' 1 oppd sitely f 'clisposed stopping fa'ces 11 a'ndi 1i 11"; seenparticulailji in' Fig; 5. The teeth -7 5 are prefei-ably sjniineti ical'so that-in case M thy iseedme uneveely' worn' the b r nmy be turnedend-foi'end.. The stop engager'sEalie preferably pivotally mounted, pawls 12 and 13{ piovi'ded' at their free ends with teeth Whichimay-bea pair elf-bars l4, and which is mounted forf'ecip'rocatory moyeinent in a direction substantially parallel to the line of. Q

advanceiof the carriage, As's'een in-Fig. '3;

the ipawlsi 13 the rebound stop engagers," are-pro vided'at their upper ends With round holes'thi'oughwhich there extends a pin 15 f secured to the. bars 14; These bars at their ends nearest the pin 15- are -slidalolymounted in a'.housingf1'6'. On; the other-hand, the pawls "12-, the stop 'engagers forresisting the advanc'efinovement o'f'the carriage; are pro- 1 vided With"longitu'dinally disposed slots 17,

thifoughlwhich'thei'efeXtendsa pin 18 This pin in"turn pa sses through round holes in the 'ba rs 14; and? is attached to vertically disposed 'ai'mpf' a bell-crank lever 19,- thef horizontal "aim thereofbeing pivotally connectedfwa rod 20 extending through a top"" plate 21 "of'thecarriageiand engaging the. upper end of a buffer spring 22; initial i; tension is placed on the spring-"22,- and the red; 2Q is provided With shoulders adapted 3 0 engagethe' platefll fol-limiting thQllP- ward movement of the rod in response to the action of the spring.

Means are provided for holding thepawls out of engagement with the stops, for releasing such holding means at the desired time to effect a stopping of the carriage, and" for again bringing the pawls into engage ment with the holding means; In the illustrative embodiment of my invention in its preferred form, the sets of

pawls

12 and 13 are held in raised position by latches 23' and as by means of pins 31, which may be driven into a strip of wood 32. The finger being thus swung backwardly, the latch 23 is, through link 28, arm 27 and shaft 25, moved 7 in the same direction to release the pawls 12, which then drop upon the detent bar 10. The pawls 13 are preferably released subsequently to the release of the. pawls 12 and substantially coincident with the engagement of the pin 18 by the lower'end of the pawl slot 17. For this purpose the latches 23 and 24: are provided with

fingers

33 and 34, respectively, the former being adapted to engage, the latter to trip the latch 24L. These fingers are, as indicated, so disposed one above the other as to accomplish the above stated successive releaslng of the

latches

23 and 24. To raise the sets of means of suitably slotted links ,35 and 36, connected to the rod 30, which in turn is supported by lever arms 37 secured to a rotatable shaft 38. A suitable conterweighted arm 39 may be used to rotate the shaft 38. It will be observed that, in raising of therod 30 to liftthe pawls, the finger 29 is likewise raised so that it may swing beyond the engaged pin 31 to .a position to be engaged by the next successive pin. 7 V

In the operation of this embodiment of my invention, the carriage is moved along the table by the rotation of the driving shaft 6. When the finger 29 strikes a pin 30 the finger is swung backwardly to turn the latch 23 to release the pawls 12 and permit them to drop into engagement ,with the detent bar 10. The further swinging of the finger 29 causes a further turning of the latch 23 to cause 3 its finger 33 to engage the finger. 34 of the latch 24, which latch comes to pawl-releasing position at substantially the same time the lower end of a slot 17 of the pawl 12 strikes the pin 18. The momentum of the carriage and its engaged load is then resisted and ,ab

; sorbed by the spring 22, the connections for this purpose between Such spring and the carriage frame including 'pawls 12, bellcrank lever 19 and rod 20. It is of importance to observe that, during the momentum-absorbing period of the movement of the carriage, the

pawls

12 and 13 engaging the detent bar or stops are, by means of the being wedged against the teeth and hence bebars 14, held against movement with rela- '1 come difficult torelease from engagement with them: lVhen the momentum of the cari riage has become absorbed by the spring 22, such sprlng reacts to br ng the carriage-back to the'po'sit-ionit occupied immediately preceding the downward movement of the spring-compressing rod 20. Any further backward movement of the carriage 1s then resisted by the rebound pawls 13. T 0 release;

the pawls and set the machine for the next movement of the carriage it is only necessary to press downwardly the arm 39.

In the modification of my inventionillustrated in Fi s. 6 and 7 the rack or detent bar 10 of themachine just described is replaced with a plurality of separately adjustable stopping elements eO,provided with oppo' sitely disposed stopping faces. Fig. 6 shows the horizontal table 41 as being provided with slots42 to receive the heads of bolts 43 to hold the stops in their adjusted positions. 1

maybe used for. fastening these stops} In pawl 12 is preferably provided with a round hole for engaging the pin 18. The pawls may be lifted from stop engaging positions Any other well known or suitable means 3 I I ,7 this modification of construction there may R pawls 12 and l3from I engagement with the detent bar, they are, by

and subsequently released by mechanism the same asthat shown in, and described with referenceto, Figs. 1 and 4, inclusive. On the other hand, the pawls may, if desired, slide upon the top of the table 41between the stops 40,-the pawl 13 being beveled as at 44 to cause it to ride over the stops as the carriage is advanced. For raisingthe pawl 12 to pass a stop, the arm 39, shaft 38, lever arm 37, and link 35 may be used;

It will be understood of this modification that the parts not shown and specifically described may be the same as shown'in Figs. 1 to 1, inclusive, and already described.

According to the provisions of the patent statutes I have described the principle and. operation of my invention together with the machine'and its modifications which I now consider to represent the best embodiment thereof. However, it will be understood that my invention may be practised by other forms of machine than that particularly shown and described.

I claim as my invention:

1. In a spacing machine, the combination of a spacing table, a plurality of stopping elements secured at longitudinal intervals thereto and provided with oppositely disposed stopping faces, a carriage movable upon said table, two oppositely acting stopengagers movably secured to said carriage and adapted to engage said oppositely disposed faces of said stopping elements, one of said engagers resisting the advance and the other the rebound movement of the carriage, and means for releasing the advance resisting stopengager from a stop.

2. In a spacing machine, the combination of a spacing table, a plurality of stopping elements secured at longitudinal intervals thereto and provided with oppositely disposed stopping faces, a work carriage movable upon said table, two oppositely disposed pawls pivotally connected to said carriage and adapted to engage said oppositely disposed faces of said stopping elements, one of said pawls resisting the advance and the other the rebound movement of the carriage, and means to release said pawls from the stopping elements.

3. In a spacing machine, the combination of a spacing table, a plurality of stopping elements secured at longitudinal intervals thereto and provided with oppositely disposed stopping faces, a work carriage movable upon sa1d table, two oppositely disposed pawls pivotally connected to said carriage and adapted to engage said oppositely disposed faces of said stopping elements, one of said pawls resisting the advance and the other the rebound movement of the carriage, holding members for keeping said pawls out of engagement with said stopping elements, and means effective upon the advance of the carriage for releasing said holding means.

4. In a spacing machine, the combination of a spacing table, a plurality of stopping elements secured at longitudinal intervals thereto and provided with oppositely disposed stopping faces, a work carriage movable upon the table, a rigid member mounted upon said carriage for reciprocatory movement substantially parallel with the line of advance thereof, a momentum absorbing buffer resisting the movement of said member in one direct-ion, two oppositely disposed pawls pivotally connected to said member and adapted to engage said oppositely disposed faces of said stopping elements, one of said pawls resisting the advance and the other the rebound movement of the carriage, and means for releasing the advance-resisting pawl from a stop.

5. In a spacing machine, the combination of a spacing table, a plurality of stopping elements secured at longitudinal intervals thereto and provided with oppositely disposed stopping faces, a work carriage movable upon said table, a rigid member mounted upon said carriage for reciprocating movement substantially parallel with the line of advance thereof, a momentum-absorbing buffer resisting the movement of said member in one direction, two oppositely disposed pawls pivotally connected to said member and adapted to engage said oppositely disposed faces of said stopping elements, one of said pawls resisting the advance and the other the rebound movement of the carriage, holding means for keeping said pawls out of engagement with said stopping elements, and means effective upon the advance of the carriage for releasing said holding means.

6. In a spacing machine, the combination of a spacing table, a detent bar secured thereto and provided with symmetrical teeth spaced at short equal longitudinal intervals and having oppositely disposed stopping faces, a work carriage movable upon said table, two oppositely disposed pawls pivotally connected to said carriage and adapted to engage said oppositely disposed faces of said teeth, and means for releasing said pawls from said teeth.

7. In a spacing machine, the combination of a spacing table, a detent bar secured thereto and provided with symmetrical teeth spaced at short equal longitudinal intervals and having oppositely disposed stopping faces, a work carriage movable upon said table, a rigid member mounted upon said carriage and for reciprocatory movement substantially parallel with the line of advance thereof, a momentum-absorbing buffer resisting the movement of said member in one direction, two oppositely disposed pawls pivotally connected to said carriage and adapted to engage said oppositely disposed faces of said teeth, holding means for keeping said pawls out of engagement with said teeth, and means effective upon the advance of the carriage for releasing said holding means.

In testimony whereof I have hereunto set my hand.

GEORGE PAUL THOMAS. Witnesses:

PAUL N. ORITCHLOW, FRANCIS J. TOMASSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner 0! Patents, Washington, D. G.