US1615415A

US1615415A - tandel

Info

Publication number: US1615415A
Authority: US
Publication date: 1927-01-25
Anticipated expiration: 1944-01-25

Description

Jan. 2s, 1927. 1,615,415'

` F. TANDEI. FABRIC FEEDING API-ARANTUSV Filed $9111.24', 1923 :s sheets-Sheet 1 Jan. 1

25 927 F.1ANDEL FABRIC FEEDING APPARATUS Filed Sept.' 24. 1923 3 Sheets-$11661; E

w 0g. i? @www /.a WV u a f/ WwM/M 4 w 15 pipes A and a part of the pipes controlle FRITZ TANDEL, CHEMNITZ, GERMANY,

CHEMNITZ, SAXONY, GERMANY,

1,615,415 PATENT OFFICE.

ASSIGNOR T C. G. HAUBOLD, A. G., 0F A CORPORATION 0F GERMANY.

FABRIC-FEEDING APPARATUS.

Application led September 24, 1923, Serial No. 664,446, and in Germany October 24, 1922.

Myvinvention relates to improvements in fabric feeding apparatus, and more particularly in apparatus of the type comprising a feeler in contact with one of the margins of the fabric and adapted to operate pneumatic means for regulating the web feeding mechanism if the web or fabric moves to the side and out of its regular path. The object of the improvements is to provide an apparatus which is simple in construction and sensitive in operation, and with this object irl vievs7 my invention consists in providing the feeler with a member formed with passages directlycontrolling the fluid supply to an apparatus operating the regulating mechanism of thecloth feeding apl paratus.

For the purpose of explaining the invention an example embodying the same has b'een shown in the accompanying drawings,

in which the same reference characters have been used in al1 the views to indicate corresponding parts. In said drawings- Fig. 1, is an elevation showing a part of a fabric feeding apparatus,

Fig. 2, is an elevation seen from the left in Fig. 1, l

Fig. 3, is a detail view showin the feeler thereby, Fig. 4 is an elevation seen from the right in Fig. 3f, and

Figs. 5 and 6, show respectively the cooperating faces of the feeler and the block connected with the iiuid supplying pipes.

Figure 7 is a sectional view through a pneumatic motor which may be used in the apparatus.

For explaining the invention I have shown the same as used in a fabric feeding apparatus of known construction shown diagrammatically in Figs. 1 and 2, and comprising a guide arm 6 for the fabric mounted for rocking about a vertical pivot 7 and guided at lts bottom on a rail 8, a roller 9 being provided on the arm 6 rail 8 is disposed on a pair of uprights 23 having a bracket 10 secured thereto, which bracket provides ay support for a screwthreaded spindle 11 screwing in apart of the arm 6 for rocking the same in one or the other' direction. To the spindle 11 a sprocket gearing 12 is keyed which is connected by a chain 13 with a sprocket gearing 14 mounted on a rockable frame 15 and having a spur gearing 16 keyed to its spindle 17. The

to reduce friction. The

frame 15 is connected with a pneumatic cylinder 18 having a supply of pressure to Opposite ends and enclosing a piston the rod 19 of which is secured at opposite ends to relatively fixed eyes 20, springs 21 bein interposed between the eyes and the end aces of the cylinder 18 for normally holding thecylinder in its median position. By admitting pressure fluid to one or the' other end of the cylinder 18 the frame 15=is rocked either to the right or left. Thereby the spur gearing 16 is thrown into engagement with either one of'spur gears 22 rotating in opposite directions, so that the spur gearing 16 and the` spindle 11 are rotated either to the right or left and the arm 6 is rocked accordingly. Pressure or suction fluid is supplied to the cylinder 18 through pipes d and caccordinr as positive or negative pressure'is employe So far the mechanism is known in the art and the brief description will be suiicient to give a clear understanding to those skilled' in the art.. I wish it to be understood that the mechanism has been described by way of example in order-that the controlling mechanism now to b'e described may be clearly understood.

The controlling mechanism is shown in detail in Figs.`3 to 6. It comprises a block lc formed with bores z', Z, and m. The bore z" communicates through a pipe b with the pressure fiuid supply 24, and thebores Z and m communicate respectively through the pipes c and d with thev opposite ends of the cylinder 18. Below the block the feeler L 90 is mounted between point bearings O, and it forms a part of a block 'a. The top face of the block a and the bottom face of the block k are cylindrical in form, the axis of the cylinder coinciding with that of the point bearings O, O, and the said faces are slightly spaced from each other in order to avoid friction of the parts moving relatively to each other. The block a is provided at its top face with two grooves e and f spaced .160 from each other and extending from they middle of the face to opposite sides and adapted to establish communication between the medianbore i and the outer bores Z and m respectively. The relative positions of 105 lows; As long as the fabric g travels in the correct way the feeler b is in the median position shown in Fig. 4 in which the|bore 'i and the supply pipe are disconnected from both bores Z, m and pipes c, d, the bottom end of the bore i being located between the grooves e and f. If now the web g is moved out of its regular path, say .to the left in Fig. 4, the feeler l1, is rocked to the left and the block a to the right, so that the groove e establishes communication between the bores l and i. Therefore pressure fluid is admitted to the right hand end of the cylinder 18, and the regulating mechanism is operated in the manner known in the art.. until the fabric is again in correct position. Thereby the feeler a, h is returned into the position shown in the figures in which none of the pipes c and d communicate with the pressure fluid supply.

Figure 7 shows a longitudinal. section through the cylinder 18. It will be observed from this view that the hollow piston rods 19 which communicate respectively with conduits d and chave the channels d1, c1 thereof, opening through ports d2 and c2 into the cylinder. W'hen pressure is applied through conduit (l, cylinder 18 moves to the left against the tension of spring 21, the air compressed in the space at the ri 'ht of piston 181 escaping throufrh `the stu g box on this side. The cylinder may be provided with opening 184 and the piston with

aprons

185, 186 in order to relieve the pressure after the gears have been properly engaged. Of course, when pressure is applied through the conduit c, channel c1 and ports c, the'cylinder 18 will move to the rig have been uncovered by the piston.

I claim:

1. In a web feeding apparatus, web feeding mechanism, regulatmg means therefor adapted to maintain the web in side register, comprising operating means adapted to be operated by fluid pressure and valve means controlling the supply of fluid pressure to said operating means comprising a block formed with a plurality of ports opening through one face thereof and a relatively movable member formed with recesses adapted to connect certain of said ports when moved in one direction from a normal position and to connect certain other of said ports when moved in the opposite direction, said blockand member having a slight clearance therebetween whereby friction is eliminated, and means engaged by the web for moving said movable member in one direction or the other according as the web deviates from one side to the other of said predetermined path.

2. In a web feeding a paratus, web feeding mechanism, regulatmg means therefor adapted to maint-ain the web in side register comprising operating means adapted to be operated by fluid pressure and means con- Y t until the openings 184 trolling the supply of fluid pressure to said operating means comprising a block having a lowerl cylindrically curved face and formed with three aligned conduits, the centralone of which communicates with a source of fluid pressure and the two lateral ones of which communicate with said operating means and a pivoted member having a curved face opposed to the curved face of said block, there being a slight clearance between said faces, said pivoted member being formed with recesses in its curved face adapted to place` the source of fluid pressure in communication with one or the other of said lateral conduits according as said pivoted member is moved to one side or the other of a normal position, said .pi-voted lmember having a depending arm adapted to engage the edge of the web.

3. In apparatus of the kind described, web feeding mechanism, regulating means therefor adaptedA to maintain theI web in side register, comprising fluid pressure operated means, and valve means controlling the supply of fluid pressure to said means comprising a block formed with a plurality of ports opening through one face thereof and a relatively movable member formed with a recess adapted to connect certain of said ports when moved in 011ev direction from its normal position, said block and member having a slight clearance therebetween, and means engaged by the web forf moving said movable member when the web deviates fromsaid predetermined path.

4. Inapparatusof the kind described, web feeding mechanism, regulating means therefor adapted to maintain the web in side register comprisingiluid pressure operated means and valve means controlling the supply of fluid pressure to said operating means comprisin a block formed with a segmental cylin rically curved face and having a plurality of ports opening at said curved face, and a pivoted feeler adapted to be engaged and operated by said web and having a curved face formed therein with recesses adapted to connect certain of said ports when the feeler is operated in one direction and certain other of said ports when operated in the other direction, there being a slight clearance between the curved faces of sa1d block and feeler.

5. In apparatus of the` kind described, web feeding mechanism, regulating means therefor adapted to maintain the web in side register comprising fluid pressure operated means and valve means controlling the supply of fluid pressure to said operating means comprising a block formed with a segmental curved-face and havinr a plurality of ports opening at said curved a pivoted feeler adapted to be engaged and operated by said web and having a segmental curved face formed therein with recesses adapted to connect certain of said face, and

ports when the feeler is operated in one direction and certain other of s'aid ports when operated in the other direction, there being a slight clearance between the curved faces of said block and feeler.

6. In a web feeding apparatus, the combination, with the feeding mechanism, and regulating means therefor adapted to hold the web in side register and comprising operating means adapted to be operated by pressure fluid in one or the other direction, of a pressure fluid supply, two 'tubulaimembers connected with said operating means for supplying pressure fluid thereto for operation of the regulating means in one or the other direction, a fluid supply, a

block having ports communicating with said Huid supply and tubular members, a rockable feeleradapted for engagement with the fabric being fed, said block and feeler having' cylindrical faces concentric rela-tively `to the fulcrum of the feeler,.said .ports opening through said faces, and said feeler be- Iing formed with passages adapted to connect said fluid supply with eitherone of said tubular members.

7. In a web feeding apparatus, the combination, withthe feeding mechanism, and

Y said conduits is supplied with fluid pressure,

a fluid supply, a block having ports'communicating with said fluid suppl and conduits, a rockable feeler adapted or engagement with the fabric being fed, said block and feeler having spaced cylindrical faces concentric relatively vto the fulcrum of the' feeler, said orts opening through said faces, and said feeler being formed with passages adapted to connect said fluid supply 'with either one of said conduits.

In testimony signature.

FRITZ TANDL.

whereof I hereunto aflix my-l