US710683A

US710683A - Cloth-cutting machine.

Info

Publication number: US710683A
Application number: US6250401A
Authority: US
Inventors: John B Gury
Original assignee: Individual
Current assignee: Individual
Priority date: 1901-05-31
Filing date: 1901-05-31
Publication date: 1902-10-07
Anticipated expiration: 1919-10-07

Description

No. 710,683. Patented ucm, 1902.

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CLOTH CUTTING MACHINE.

(Application ledlhy 31, 1901.) l

3 Sheets-Sheet I.

(No Model.)

John-B. Gurj Patented Oct. 7, |902..

CLUTH CUTTING MACHINE. (Application filed My 31, 1901.)

Y nn U G B. L

3 Sheets-Sheet 2.

(No Model.)

John B. Gury' T E NoRms PErns 9g', Pnumu'mo.. wAswNoToN D c No. 7|0,683. Patented Dct. 7, |902.

J. .B. GURY.

CLOTH CUTTING MACHINE.

(Application me; my a1, 1901.) {No.lludel.) 3 Shaun-Sheet 3.

hmm A 78 John B. Gry

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Unir-sn Sra-rss VATENT OFFICE.

.IOHN B. GURY, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE-HALF TO IKE BLOCK, OF ST. LOUIS, MISSOURI.

CLOTH-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 710,683, dated October 7, 1902,

Application filed May 31,1901. Serial No. 62,504. (No model To all whom t may concern:

Be it known that I, JOHN B. GURY, acitizen of the United States, residing at the city of St. Louis, in the State of Missouri, have in vented a certain new and useful Cloth-Cutting Machine, of which the following is such a full, clear, and exact description as willenable any one skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, formingapart of this specification.

My invention relates to cloth-cutting machines, and more particularly to that class of cloth-cutting machines in which a verticallyreciprocating knife is carried by a base-plate adapted to pass beneath the cloth, which knife is actuated by means of a suitable motor carried by said base-plate.

One object of my invention is to provide au improved form of knife for machines of the class above referred to.

Another object of my invention is to provide improved means for adjusting the knife.

Still another object of my invention is to provide means for sharpening the knife.

My invention consists in certain novel features and details of construction, all of which are described in the following specification and pointed out in the claims affixed hereto.

In the accompanying drawings, lwhich show a cloth-cutting machine made in accordance with my invention, Figure l is a side view, partly in section and partly in elevation. Fig. 2 is an enlarged detail view showing the manner of adjusting the knife. Fig. 3 is a detail view showing my preferred form of knife. Fig. 4 is a section on the line 4 4 of Fig. 3. Fig. 5 is a detail View showing the connections for driving the knife. Fig. 6 is a top plan view. Fig. 7 is a top plan view, on an enlarged scale, of the grinding mechanism, the parts supporting said grinding mechanism being shown in section. Fig. Sis a bottom plan view of the grinding mechanism. Fig. 9 is an enlarged section through the preferred form of knife shown in Fig. 3. Fig. l0 is a sectional view showing the gearing for driving the grinding-wheels. Fig. ll ,is a detail View of a portion of the grinding mechanism. Fig. l2 is a section on the line l2 12 of Fig. l0. Figs. 13 and 14 are a top plan view and a vertical section, respectively, showing the means for throwing the grinding mechanism into and out of engagement with the motor. Fig. l5 is an enlarged sectional view showing the device for throwing the knife into and out of connection with the motor. Y

Like marks of reference refer to similar parts in the several views of the drawings.

2O is the base-plate, which is adapted to pass beneath the goods to be cut by the machine. The base-plate 2O carries an upright or standard 21. Formed on the upper end of the standard 21 is a substantially circular plate or table 22, to which is attached the handle 23. Secured to the plate or table 22 is the lower portion 24 of the motor-frame 25.

26 is the armature of the motor, and 27 the field-coil. The shaft 2S of the armature is journaled at its lower end in the base 24 of the motor-frame and is provided with a disk 29, which will be hereinafter described. The upper end of the said shaft is journaled in a bearing-box 30, also carried by the motorframe 25. Secured to the upper end of the armature-shaft 2S is a beveled gear-wheel 3l. The beveled gear-wheel 3l meshes with a beveled gear-wheel 32,loosely mounted on a stud 33, carried by the bearing-block 30. The beveled gear-wheel 32 is connected with a crankarm 34 in such a manner that the said crankarm must rotate with the wheel, but so that the wheel can have longitudinal movement on the stud 33 independent of the said crankarm in Order to allow it to be thrown out of engagement with the wheel 3l. The wheel 32 is normally held in engagement with the wheel 3l by means of a coil-spring 35. Opposite the arm 34 is a counterbalance 36, preferably in the form of a segment, as shown in the drawings. In order to throw the wheel 32 out of engagement with the wheel 3l, a longitudinally-movable rod 38 (best shown in Fig. l5) is carried in the bearing-block 30 and bears against the face of the wheel 32. EX- tending upwardly through the rod 38 is an arm 39, adapted to be acted upon by a cam 40, pivoted on the top of the bearing-block 30. Pivoted tothe crank-arm 34 is one end of connecting-rod 4l, the other end of which is pivoted to the upper end of a sliding bar 42.

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The bar 42 slides in a guide 43, carried by the base 24 of the motor-frame 25. Secured to the bar 42 is a knife 44. In Figs. l and 5 this knife is shown as of the ordinary form. I prefer,however,to use the form of knife shown in Figs. 3, 4, and 9, which Awill be hereinafter described. The manner of attaching either form of knife to the bar 42 is the same and is shown in detail in Fig. 2. In the upper end of the knife 44 is formed a slot 45,through which passes a pin 46,carried in the lowerl bifurcated end of a threaded rod 47, the upper end of which is adapted to be secured in the bar 42 by means of a clamping-ring 48, the lower end of the said bar being hollow and split, so as to allow the ring 48 to clamp it firmly around the said rod 47.

49 is a nut surrounding the rod 47 and adapted to be screwed down against the top of the blade 44, so as to prevent the pin 46 from moving in the slot 45. Above the nut 49 is a nut 50, which is adapted to come against the lower end of the bar 42, and thus adjust the vertical position of the knife 44. The knife 44 is preferably provided with an a'djustable guard or presser-foot 51. A switch 52 is provided for controlling the current to the motor.

In order to provide means for sharpening theknife 44,the disk 29,hereinbefore referred to, is provided with an internal groove 55, Fig. 14, which groove is adapted to coperate with afriction-wheel 56, carried on the upper end of a rod 57. The rod 57 is journaled at its upper end in a sliding block 58, carried on the table 22 at the upper end of the standard 212 The block 58 is acted upon by a spring 59, which tends to force the wheel 56 into con= tact with the groove 55, and thus drive the rod 57 from the motor.

60 is a thumb-screw which is adapted to force the block 58 against the pressure of the spring 59, thus throwing the wheel 56 out of contact with the groove 55. The lower end of the rod or shaft 57 is journaled in the baseplate 20. The shaft 57 is provided with a longitudinal groove, in which slides a pin 61, carried on a spur-wheel 62, Figs. 7, 8, l0, and l1. The said spur-wheel 62 is situated in a casing 63, carried on a plate 64. The spurwheel 62 meshes with two spur-wheels 65, which are journaled, by means of rivets or screws 66,in casings 67. These casings 67 are pivoted, by means of bolts 68, Figs. 7 and 8, to arms 69, carried by a block 70, sliding on the plate 64. The spur-wheels 65 are held in engagement with the wheel 62 by means of a spring 71, attached to pins 72, secured in the said casings 67, Figs. 7 and ll. In each of the casings 67 is a second spur-wheel 73, which is journaled on the bolt 68, hereinbefore referred to. The spur-wheels 73 are of such a thickness as to extend below the casings 67 and enter casings 74, Fig. l2. In one of the casings 74 is journaled a spur-wheel 75, which meshes with one of the spur-wheels 73 and in turn drives a spur-wheel 76, connected with the shaft 77 on one of the grinding-wheels 78. In the other casing 74 (see Fig. l0) the spurwheel 75 is replaced by two small spur-wheels 75, the object of this being to drive both the grinding-wheels in the direction indicated by the arrows in the drawings. In order to prevent the wheel 65 from being drawn too closely in contact with the wheel 62 by the spring 7l, the casings 67 are provided with cam-surfaces 79, Fig. ll, which bear on the casing 63 of the wheel 62, and thus hold the wheel 65 at the proper distance from the wheel 62 in the various relative positions of the block and plate 64. The casings 74 are normally prevented from turning on the bolts 68 by means of springs 80, secured to the sliding block 70 and provided at their ends with detents 8l, which enter notches 82 in the said casing 74. Vhen the detent 81 is in engagement with one of the notches in the casing 74, the grinding-wheel will be held in its forward position, as shown in Figs. 8 and 10. While it is in engagement with the other of said notches the grinding-wheel will be held in its rearward position and away from the knife 44, as shown in the upper wheel in Fig. 7. Surrounding a reduced portion of the casing 63 is a split ring 85, Figs. l and 7, carrying a pair of arms 86. In the arms 86 are short sliding bars 87, in the ends of which arejonrnaled rollers 88, adapted to bear on the upright 2l, and thus guide the grinding-wheels. The bars 87 are adjusted in and out of the arms 86 by means of milled heads 89.

The operation of my machine is as follows: The base-plate 2O is guided beneath the cloth by means of a handle 23 in the usual manner. Current being supplied to the motor, the armature 26 is rotated, and motionis communicated,through the beveled gear-wheels 3l and 32, to the crank-arm 34 and thence through the connecting-rod 4l to the sliding bar 42, carrying the knife 44, and thus imparting a reciprocating motion to the said knife. friction-wheel 56 during this time is held out of contact with the groove 55 in the disk 29 by means of a set-screw 60. In order to adjust the knife 44 to compensate for any wear on its rear edge, which bears against the bottom of a slot in the standard 2l, the nut 49 is loosened, so as to allow the pin 46 to slide in the slot 45. /Vhen the rear edge of the knife has been properly adjusted against the bottom of the slot in the standard 2l, the nut 49 is tightened, thus effectually adjusting the knife in the direction of its width. In order to compensate for any wear on the lower edge ofthe knife, the nut 50 may be adjusted along the threaded rod 47, which will thus determine the vertical adjustment of the knife. When it is desired to sharpen the knife, the cam 40 is moved to' come in contact with the upper projecting arm 39, carried by the sliding rod 38. This forces the said sliding rod against the face of the wheel 32 and forces it out of engagement with the wheel 31, compressing the spring 35. The knife is now IIO The

thrown out of engagement with the motor. In order to throw the grinding mechanism in engagement with the motor, the set-screw is loosened, thus allowing the spring 59 to force the friction-wheel 56 into contact with the groove 55 in the disk 29. The shaft 57 will now be driven by the motor. The rotation of the shaft 57 will be communicated by means of a spur-wheel 62 to the spur-wheels 65 and thence through the gearing shown in Fig. 10 to the grinding-wheels 76, which will be rotated in the direction shown by the arrows. By rotating the milled heads 89 the grinding-wheels 76 can be adjusted to bring first one and then the other in contact with the knife 44. The grinding device can be slid along the shaft 57, so as to grind the entire edge of the knife. As the knife becomes worn the grinding-wheels can be adjusted in the direction of the width of the knife by rotating the milled head 90 of a screw which engages a lug 91 on the plate 64 and enters the block 79, which causes the block to slide on the plate 64. The wheels 65 will be kept in contact with the wheels 62 by the combined action of the cam-surfaces 79 and the spring 7l, as has been hereinbefore described. Vhen the grinding-wheels are not in use,they may be moved away from the knife by swinging the casings 74 on the bolts 68. The friction-wheel 56 can then be moved out of contact with the groove 55 and the disk 29 by rotating the screw 60, and the knife can be again thrown into connection with the motor by means of the cam 40. rlhe objection to using the ordinary form of knife, as shown at 44 in the drawings, in connection with this particular type of grinding device is the difficulty of sharpening the lower end of the knife. To overcome this difculty, I prefer to use the form of knife shown in Figs. 3, 4, and 9, as will be hereinafter described.

In my preferred form of knife I substitute for the straight-edged knife 44 a blade 92, which slides in the upright 2l in the same way as the knife 44 and is connected to the sliding bar 42 in the same manner. The blade itself, however, does not act as a knife; but pivotally mounted on it are one or more angular knives 93. These knives 93 are preferably two in number and preferably hexagonal in form, as shown in the drawings. Each of the hexagonal knives 93 is provided with a number of perforations 94. One of the perforations in each of these knives is engaged by a pin 95, carried on a spring 96. The perforations are so arranged that when one is in engagement with the pin 95 one of the edges of the knife will be vertical, as shown in the drawings. In order to rotate the knives, the pin 95 is forced out of engagement with the perforations 94, preferably by means of a key 97, Fig. 9. The knife can then be rotated until an adjacent edge comes into a vertical position. rIhe pin will then engage with the next adjacent opening 94 and retain the knife in-this position. It will be seen that each edge of the knife can thus be brought into vertical position to be sharpened by the grinding device and that when the knife has been sharpened it can be turned until all its edges have been successively brought into operative position, thus greatly lengthening the time aknife can bel used without sharpening.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

l. In a cloth-cutting machine, the combination with a base, of a standard carried thereby, a reciprocating blade carried by said standard and adapted to pass through the material to be cut, and a rotatable knife carried by said blade.

2. In a cloth-cutting machine, the combination with a base, of a standard carried thereby, a reciprocating blade carried by said standard and adapted to pass through the material to be cut, and an angular rotatable knife carried by said blade.

3. In a cloth-cutting machine, the combination with a base, of a standard carried thereby, a reciprocating blade carried by said standard and adapted to pass through the material to be cut, and a hexagonal rotatable knife carried by said blade.

4. In acloth-cutting machine, the combination with a base, of a standard carried thereby, a vertically-reciprocating blade carried by said standard and adapted to pass through the material to be cut, a knife rotatably mounted on said blade, and means for locking said knife against rotation.

5. In a cloth-cutting machine, the combination with a base, of a standard carried thereby, a reciprocating blade carried by said standard and adapted to pass through the material to be cut, an angular knife rotatably mounted on said blade, and a spring-detent carried by said blade for engaging with said knife.

6. In a cloth-cutting machine, the combination with a base, of a standard carried thereby, a motor carried by said standard, a reciprocating bar actuated by said motor, a blade provided with a transverse slot, a pin in said bar passing through said slot, and a lockingnut on said bar adapted to bear against the top of said blade.

7. In a cloth-cutting machine, the combination with a base, of a standard carried thereby, a motor carried by said standard, a reciprocating bar actuated by said motor, a blade, a threaded rod carried by said blade and adapted to engage with said bar, and a nut on said bar for adjusting said blade vertically.

8. In a cloth-cutting machine, the combination with a base, of a standard carried thereby, a reciprocating knife, a motor, a shaft parallel with said standard and adapted to be driven by said motor, a grinding-wheel for sharpening said knife and adapted to move IOO IIO

longitudinally of said shaft, and gearing connecting said shaft with said grinding-Wheel.

9. In a cloth-cutting machine, the combination with a base, of a standard carriedthereby, a motor carried by said standard, a reciprocating knife adapted to be driven by said motor, a shaft extending parallel With said standard, a grinding-Wheel adapted to be driven by said shaft and movable longitudinally thereof, and means for throwing said shaft into and out of engagement With said motor.

10. In a cloth-cutting machine, the combination with a base, of a standard carried thereby, a motor carried by said standard, a reciprocating knife adapted to be actuated by said motor, a grinding-Wheel for said knife, a shaft for driving said grinding-Wheel, a disk carried by said motor, a friction-Wheel carried by said shaft and adapted to engage said disk, and means for throwing said friction- Wheel into and out of engagement with said disk.

11. In a cloth-cutting machine, the combination With a base, of a standard carried thereby, a motor carried by said standard, a reciprocating knife adapted to be driven by said motor, a grinding-Wheel for said knife, a pivotally-mounted arm carrying said grinding-Wheel, gearing in said arm for driving said grinding-Wheel, and means for driving said gearing from said motor.

12. Inacloth-cuttingmachine,the combination With a base, of a standard carried thereby, a motor carried by said standard, a reciprocating knife adapted to be driven by said motor, a shaft also adapted to be driven by said motor, a gear-wheel movable longitudinally of said shaft and adapted to be driven thereby, a pivoted arm carrying gearing adapted to mesh with said first-named gear-Wheel, a second pivoted arm also carrying gearing connected with the gearing of said rst-named arm, and a grinding-Wheel carried by said latter-named arm and adapted to operate said knife.

13. In a cloth-cutting machine,the combination with a base, of a standard carried thereby, a motor carried by said standard, a reciprocating knife adapted to be actuated by said motor, a shaft also adapted to be actuated by said motor, a gear-Wheel movable longitudinally of said shaft and driven thereby, a pivotally-mounted arm carrying gearing, a spring for holding said gearing in engagement with said first-named gear-Wheel, and a grinding-Wheel adapted to be actuated by said gearing.

14. In a cloth-cutting machine,the combination with a base, of a standard carried thereby, a motor carried by said standard, a reciprocating knife adapted to be actuated by said motor, a shaft also adapted to be actuated by said motor, a gear-Wheel movable longitudinally of said shaft and actuated thereby, a pivoted arm carrying gearing, a

spring for holding said gearing in engagement with said rst-named gear-Wheel, a cam carried by said pivotally-mounted arm for limiting the action of said spring, and a grinding-Wheel actuated by the gearing of said pivoted arm.

15. Inacloth-cutting machine,the combination with a base, of a standard carried thereby, a motor carried by said standard, a reciprocating knife adapted to be actuated by said motor, a shaft also adapted to be actuated by said motor, a gear-Wheel actuated by said shaft, a plate carrying said gear-wheel and movable longitudinally of said shaft, a member slidingly mounted on said plate, gearing carried by said member, means for holding said gearing in engagement with said firstnamed gear-Wheel, and a grindingwheel driven by said gearing.

16. Inacloth-cuttingmachine,thecombina tion With a base, of a standard carried thereby, a motor carried by said standard, a. reciprocating knife adapted to be actuated by said motor, a shaft also adapted to be actuated by said motor, a gear-Wheel actuated by said shaft, a plate carrying said gear-Wheel and movable longitudinally of said shaft, a member slidingly mounted on said plate, gearing carried by said member, a spring for holding said gearing in engagement with said rstnamed gear-Wheel, and a grinding-Wheel driven by said gearing.

17 In acloth-cuttingmachine,the combination with a base, of a standard carried thereby, a motor carried by said standard, a reciprocating knife adapted to be actuated by said motor, a shaft also adapted to be actuated by said motor, a gear-Wheel actuated by said shaft, a plate carrying said gear-wheel and movable longitudinally of said shaft, a member slidingly mounted on said plate, gearing carried by said member, a spring for holding said gearing in engagement with said rstnamed gear-Wheel, a cam for limiting the action of said spring, and a grinding-wheel driven by said gearing.

1S. Inacloth-cuttingmachine,thecombina tion With a base, of a standard carried thereby, a motor carried by said standard, a reciprocating knife driven by said motor, means for throwing said knife into and out of engagement with said motor, a grinding-Wheel for said knife also driven by said motor, and means for throwing said Wheel into and out of engagement with said motor.

19. In a knife for vcloth-cutting machines, the combination with a blade adapted to be reciprocated and to pass through the goods to be cut, of a knife rotatably mounted on said blade.

20. In a knife for cloth-cutting machines, the combination With a blade adapted to be reciprocated and to pass through the goods to be cut, of an angular knife rotatably mounted on said blade.

21. In a knife for cloth-cutting machines,

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the Combination with a blade adapted to be for engaging said knife and preventing its ro reeiprooated and to pass through the goods tation. to be out, of a knife rotatably mounted on In testimony whereof I have hereunto set said blade, and means for preventing the romy hand and affixed my seal in the presence 5 tation of said knife. of the two subscribing Witnesses.

In a knife for cloth-Cutting machines, JOHN B GURY. [L Si the combination with a blade adapted to be reoiprocated and to pass through the goods Witnesses: to be out, of an angular knife rotatably JAMES H. BRYSON, :o mounted on said blade, and a spring-detent WV. A. ALEXANDER.