US941331A - Machine for making picture-frames. - Google Patents

Description

-J. MUELLER. MACHINE FOB KA KIIIG PICTURE FRAMES.

arrmonxoxrnm; 1130.2, 1907.

* Patented NOV. 23, 1909'.

2 SHEETS-SHEET 1.

' jmlil b 3.. MUELLER, I HAGHINE FOR MAKING PICTURE FRAMES. APPLIUATIOE' PIZED 1320.2; 1907.

19%},331 A mews. N0v.23 ,1909.

2 SE-EETS SHEET 2.

JAGGB HUEGL "MUELLER. 32223012 21333 MANUFAWB.

efs r pulleys 11 12 13. The far-011 313 ri hzis 1 z: 91 posis are e d with, guiczewa s 7 did 8) in their upper w s, in ewa s are sliiably'mounfied; bean?- 15. The bearing bioeks :1 0 imvel ed by screws 15, S-Vliifih 1 brackets 17, and threadsd in .ocks. Rotation 0f the screws is gearing which sham; mmsist 8 u 0021 "aim screws Whisk. am

. 19, am nmulf 2 adapted f? e3: :1 ciuich or ether-Wise s s I wsrm irehtisns b I s9 tmt' b 5% 24, he screws 1%- invmzt in one directioa g blocks 325, and by 1351 5:1 0 pera ti ze qc mzestisn WW "Q pnliey, 1% reverse ma jsasnaleei in SH-3 bearin- 8.5 val-1712s & mile? or gauliey 33 drive pniieg" 0f 3 a series receives rips movement f mhis mammal m geaa Fig. 11 is N Fig. 12' is 1,;

Refernn of substanwasted A I 4 j'mft J, prefer hi I rthin the pulley 19 and if deentirelyseparate and independent counter shaft for transmitting is threaded upon a screw threaded pin 56.

the powerto the shaft 31, which is the driving shaft of the wrapping mechanism. A wrapping belt 41 passes about the rollers or pulleys, 11, 31, 12, 13, and about an idler or take-up pulley 42, which is secured upon a shaft 43 journaled in bearings 44, that are slidably mounted upon the frame. The

, bearings 44, are secured upon blocks 45 that slide in guideways 4.6, and a cross bar 45 connects said blocks so as to cause them to move in unison, which cross bar 18 connected to a. weight or other tension device 47, by a cable 48 that passes over a sheave journaled upon the frame 1. A tension device is thus formed which acts as a .belt tightener 'or take-up mechanism, serving tomaintain a constant tension upon the belt 41. Stops 49 maybe provided to limit the backward movement of the idler beyond a certain limit. A loop or bight 41 of the belt extends be- I tween the pulleys, 32, 12, and in said loop is supported a block or mandrel 50, around which the sheets or strips are wound or coiled to form the frame structure. The 1nandrel,5.0 is wholl independent, that is, it has no support otl ierthan the wrapping belt. The belt is drawn snugly around this block during the winding process and serves not only to wrap the sheets or'strips around the block but toapply sufficient pressure to the sheets or strips to press the various laps' thereof tightly together to give the frame its proper shape.- Furthermore, the pulleys 32, 12, are set as close together as is p0ssi- 'ble, thus causing the loop to surround or engage practically the entire .curved surface of Themandrel being unprothe belt, is drawn tightly upon the pulleys 32, 12 and rolled around upon them so thait. the sheets or strips are not only held-down:

upon the mandrel by the loop in the belt but a rolling pressure is brought te -bear;

upon the strip as the ma'ndrlelis rolled around upon the pulleys. The center point a of the mandrel travels substantially in an elliptical track shown by the dotted lines in Fig. 3 but the body of the mandrel shifts or rolls around with its curved surface bear-' ing upon the pulleys. Of course it-is to be understood that the belt lies between the man drel and the pulleys so that the rollers bear nplon the mandrel through the intervening be t. 1

The block or mandrel is preferably made collapsible to facilitate its removal from the frame structure surrounding it and a very simple expedient is shown for this purpose. The block or mandrel is in two sections 51, 52, which are connected together by two plates 53 which are hinged to the sides of the section 52 and connected to the other section by pins 54 and a 'wingnut 55 which may be inserted. swung into operative position to connect the pinions 32, and the hand lever 39'shiftcd to throw the shaft 9 into operative connec- By unscrewing the \vingnut the plate may be swung out of engagement with the pins and the two sections 51, 52 collapsed, to'disengage them from the surrouruling frame structure. 4 shows a plurality of the sheets or strips A, which go to make up a frame structure, and these sheets or strips are cut into such lengths that each successive strip is enough longer than its preceding one to be wrapped around the same, a ftcr it-has been wrapped or coiled around the block or mandrel. By cutting the sheets or strips into such lengths a fran'ie structure can be made, upon which none of the sheets or stripsoverlap themselves, but the ends of each sheet or strip abut against each other thereby making a frame ofuniform cross section throughout its entire extent. This is of great importance because less work is required to finish the frame and a perfectly shaped frame is formed in the first instance which requires no trh'nming down of its periphery to do away with the overlapping edges of the ordinary frame. I have shown a work bench '60 having an inclined table (31, upon which the sheets are laid and fed into the machine. A guide (32 is pro ided upon this bench for directing the SllQLES into the machine, and adeflecting'shield .63 extends in between the pulleys 32, 12 to prevent the glued surface of the sheets from contacting with the belt as it passes around the roller 32.

The operation of the machine as fol lows:-The block or mandrelis extended to operative position and inserted into the loop or bight 41 of the belt 41, if; being un derstood that the pulley 32 has kleen'previ ously raised to permit the ready i!emoval or replacement of the block or mandrel. After the mandrel has been inserted into the loop, the hand lever 29. is ,-;"'shiftcd to throw the clutch 25 into operative cmmcction with the pulley 23 whereupon the bearing blocks 15' Qwill be lowered'carryiiig the shaft 31, pulley '32, and belt 41 down toward the pulley 12,

thus practically closing the loop around the block against the tension afforded by the;

weight 47, but leaving an opening between thepulleys 32, 12, through which the sheets The pinion 34 isthen tion with the pulley 22. The rotation of the pulley 32 draws the belt 41, around the block or mandrel 50 and through themaserves to draw the block upon the p'ul eys 32, 12, the belt 41, however, being interposed between the block and pulleys. The shortest of the sheets or strips is then fed in between the block and the lower half of the loop, and

soon as it is grippelbetwesn the 333021 a d belt, it will immediately be drawn between the block and loop and. thus 112M. snugly span the black regardless of shape'pf the iblock. Ghieis fries applied to the remaining shesi's or strips ma they fed upzm the: first m in succsssisn the block thev mschins stepped, 1e pulley 32 raised and the block remsvs. 20211 the loop. The Mock is then c-sfianssd the surrounding frame sir are and the flatter removed. Afilerwmd 1113 Tame sizzzcture is sawed-up into frames A g thickness from from to has 0f abs an inch, and the frames are then irimmeii and finishetl as usual.

It is perfectly libvious that zhs semen) of the block or mandrel 50 may he alters is produce frames of other shapes, that is the ellipse may he hnger 01' flatter as desirsfi, andin fact the semen: of black may a, perfect circle 50 that round frame may be made thereon. Furthermc-rs, 'sse of thes blocks may be Vffl'id; 'ibflg$ pmviding means for makigzg various 5: and shaped frames. 011s advania" m tins 9 1s that blocks of difierent and slmipss be empioyed Without any fins ad ustmezai- 0f any or the otherpssts m? ihs IRfiChHE-E, the take-up mechanism causes wrap belt to accommodaie fissii" the vane suaed and shaped blocks. F15. rolling the mandrel upon inc v uiisys the sheets are roiled down 11:30:: ese

for he Limited claims Hons, dssi re to OW 2:16, AM i LWG 'QHHQf S fur the msmlz'eii, and means the nmndxei batsman the the (j tbs bei is a Wmm'fing bi mg around the man- Sui-'1 mating .Ji v- 1m m; sum saws.

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