US1020858A - Glass-drawing apparatus. - Google Patents

Description

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zen of "the United States, .residinga't Viti'- c-enries, :in the 'countygoi KnoX, State ,oft In-.X diana, have iiw'ented certain'newV and useful, v 'Improvements in Glasvs'fDrawing Apparatus 3M and. I do herebyl declare .the following to bev ventioin suclias will .enable others skilled. in

use-the same.

theartjto which it appertains t'o'niake vand This v'invention relates 1 .to glass drawing s,

apparatus andfparticularly to that type iii which thel drawingbperation. is. Aeffected ine# d The object lwill enable tlieludlrawing operation to be aca given fixed point.

In {foriningglass i cyliiiders it is necessary` to provide-forti yrelease of: air vpressure after :tliewcap of sanie'fisr,made. v

A It is ltherefore5` a further obj` ect of in-y vention' to prey-ide. meaiisioi" 'i'.educ'inggtlie presenre;.dni-ing thegoperat'ion of draiwf." ing `when it is` no Alonger possible toniaintain proper execution ofjtlile work', St

anisin; l v Tothisl ereiice Awill be had"J ,to l" the accompanying drawings in: which like 4cliaigactei's :'oflirefeience denote corresponding :parte in tlie'sevf A eral- Views, and infwhich View of ythe "motor,l and coniiecltions` foi: ,'posi.-

tiiely'raising and lowering the drawing caririageyFig. '3, a longitudinal VINCENNESJNDIANA, lAsslejioiz tro-aman" v -V VINCENNES, .Ii\ iii:ia1\m.f: `1 I i Specicaton of Letters Patent; Aippiiatilnaiefi septembe 273.1905'.

A l reservoir: 'which' isf-located Be it known that 1ANDREW, TUITE, 'al c1t1 of the iiireiition` resides in 1an. improved `construction of apparatus 'of tliel characterwiiamed. .which-will be exceedingly simple-and efcient in yoperation and which i; i, 1,". l endl the! "iiix'ention'A consists vin fthe; details. of construction; and iii `the`- laria(ii-gef:r nient aiidcoinbinat-ionof part-sto be .herein-;

afteriiioie `fully se@ 'floittliland' clafi i1ied,;4

drawing c'arrlage;,.. y In these drawings'tlieedrawingca age il .the apparatus conip'i-isesxa fi'aiiie Witli- 'der 5 and@y and; top .'iiidfbotto'fii b Y 8 prvidedwith guide blocks 9.ar'id c -it -iwill' be understood- .tiavel ymathetiger i.

guide bars lll-Tand]1 2,` respectiwelyfas he (i drawing carriage is iaised-aiid lowei:ed supporting,member 13 connect tl barsl qand-v -G- and :is prov.idelgfiiiV V r its ends withairopeniriigwl y l Vpassesla blow pipe 14;- this, -bl ip -lexteiid's'tlirougli lapeiftiii'es formed 4 and bottonibairs 8k iasrzapc 'ustab y secured -to its interinediategjp'ointf y 14K., As will beapp'arentfron Eig. drawings l.t-lief blow .',pipei is,n fo yin sections the -`adjacentgfenilsf threaded orei'igageiiientby tb slee not only iscrv'esto'Permit Oi the? sligliti ine-inbferA E gaging a collar 34 on said shaft 27 and the `other end abutting'the clutch member 32 constantly tends to force said member into. locking engagement' with the corresponding clutch member 33 which is fixed to theear'26. It will thus be obvious that 7when e motor'31 is operated in one direction, the clutch members-32 and 33 being in locking engagementz the drum `21 will be rowhen the direction of rotation of the 31 is reversed the drawing carriage will be tated and the drawing vated, and it will be lkewise apparent that otor .l lowered. It is sometimes desirous, howtween said members. When this operation ever, to quickly and effectively. lower the drawing. carriage vwithout actuating the mechanism just described for, that purpose.

member 32 the arm 35 of the pivoted angu- .larrarmature 36. Disposed adjacent 'said armature -is a magnet 37 which when energized is adapted-to attract the armature 36.

vand thereby lmpart to the clutch member 32 -a movement away from the clutch member 33 and release the locking engagement be.

has taken place thedrawing-carriage by reason ,of its weight will automatically de scend; the drum 21 being then freeto rotate independently of the motor '31 and the variousfother connections. The energization .of the magnet A37 is controlled by the electric switch 38 located at the operators table 39 and connected with said magnet by suitable conductorsAO and 41.

The starting and stopping of the motor 31 is instituted by the controller 42 mounted o'n the operators table 39, said controller being electrically connected with the motor 31 by theV connections- 43, 44,- 45 and 46; while-the direction of rotation .of said -motor is reversed through the medium of .a switch 47 `also located on the operators table.

Compressed air from al suitable supply '(notshown) is transmitted through `the blow pipe 14 by means of the pipe line connection which comprises the pipe sections 48 and 49. and a reservoir 50, the section 48 communicating at one end with the interior of` the'reservoir` 50 and at the other end with the compressed air supply (not shown).

49 has upper and extending throu y 6.5 Sfumg box and into' the interioncf' eins@ vThe section 49 has its lower end resting upon-the upper end of the blow pipe 14, the construction of the engaging ends of the blowpipe 14 and thesection 49'being such 'that the weight of the. latter produces a substantially air tight-connection at said point of engagement. The reservoir 50 comprises a casing having its upper end .closed and its lower end provided with a stuiiing box 51, the.pipe section 48v entering .saidl vseserwoir'- intermediate its closed end,a nd said stuffing, box, and the. pipe. line. section carriage will be ele-y Iervoir; The length of the reservoir 50 is such that .the open endv of the pipe section thereof as the draw .carriage is moved up and down during the operation of drawing the glass. The pipe section 48 has provided 'therein a vent pipe 53 which is provided with a valve 54 by which communication with the atmosphere from 'the said pipe section 48, through the vent pipe 53 is controlled. Also located in said pipe section 48 is a stop-cock through the utilization of which the supply of compressed air to the blow pipe 14 may -be entirely cut ofi'. It will be noted that both the valve 54' ofthe vent pipe 53 and stop-cock 55 are located ad# jacent the operators table 39 so as. to permit Vthe convenient and ready operation thereof by theI operator during the manipulation of the electrically operated means for raising and lowering the draw carriage.

'.From the foregoing construction it will be readily apparent that the number of workmen required in the operation -of the apparatus is reduced to a minimum as the operator-stationed -at the table 39 is enabled, not only to effect the raising and lowering of the draw' carriage with promptness and facility but also to control the reduction in air .pressure during the operation of the apparatus by 'he opening of the vent pipe 53 to'a desired extent.

- The operation ofthe apparatus is as fol`- 49 will always be confined in the interior 1 lows-Assuming the carrier 7 to be in the the bait of-theblow pipe. It will be further apparent that during the elevation of the pipe 47 the upper end 'of the pipe 49 -will move into the reservoir 50 and thus permit the. elevation ofthe carrier 7 without interference or the employment of a flexible connect-ion between 'the blow pipe 14 and the compressed air supply.' lVhen the elevation of the carrier 7 is instituted the vent 54 is closed .and the pressure -of the compressed air traveling through pipe 49 is equivalent to the pressure of the air supply. However, as it is essentialv inproducing glasslobjectsof certain forms .that the pressure ofi/air be reduced, as the drawing of the objectproceeds the vent '54 may be- .opened and thus reduce the pressure of air as singthrough `the pipe 49 below thepresne 'the supply, I n eases where it is not serving 'to form the desired glass objecten necessary v'tol reduce the j pressure. during the process of' dawi'n-g the .venti isA employed to maintain' a given pressure `when a cert-ain,

- .amount of air 11n the reservoir 50 is displaced by the entrance of the upper end of ,the pipe 49 therein.4 V

In order to lower th'e carrier '7 'without ping the mot-or' 31l 'the electrically opersto 'ate,( :l1; 1tch,is utilized vby the 4opera-tion of the switch 38; it being apparent' from anun-- t spection Aof Figs.' 1 Aand 2 that the,energiza"l tion of themagneti will throw out vsaid c1utch, while.ithe spring 33. will serve' to automatically throw in the-'clutch whenfthe magnet 37 is not energized.

It will be" not'ed. that vwhile one parl ticular way .of carrying. the' invention into practice has been shown ,and described it v will be obvious that variouschanges in ther Adetails of construction and in .'the arrangef fment' and combination, of 4parts may be 1e'v .sorted to .without inlany manner departing' j from the scope thereof.y

What I claim is :4J- ,I

` The combination' in av glass drawing apparatus', of a bas, 4spaced guides 'ext-ending vertically therefrom, a frame `slidalo'le upon -s'aid guides, said frame consisting of ver- .tical 'and longitudinal bars, a drawing tube slidable through the frame, 'a sleeve formed l30 upon one ofsaid bars and surrounding the drawing tube, said sleeve being greater in diameter than'tl'ie opening in thebar which 'surrounds the' drawing tube,'a stop adjustable `upon the drawing tube'for en agement 35 with the shouldered lower' end of't e sleeve, cables secured to opposite `ends of the frame' .uponk opposite sides of the' drawing tube,

guidev's'heaves-engaging the cables 'and'a winding drum 'for the cables, .a telescoping 4.0' tube engaging the upper end of the-drawing' tube, 'therinterior 'of Asaid tube being provided withl circularrecess'es, a pipe extend-l ing from one of-sald recesses and a .vacuumv 'attachment for the pipe.

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