US1215934A

US1215934A - Cross-wrapping machine.

Info

Publication number: US1215934A
Application number: US8264016A
Authority: US
Inventors: Ora E Heckman
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-03-07
Filing date: 1916-03-07
Publication date: 1917-02-13
Anticipated expiration: 1934-02-13

Description

O. E. HECKMAN.

ROSS WRAPPING MACHINE.

APPLICATION FILED III/III. I. 1916.

Patented Feb. 13, 1917,

2 SHEETS-SHEET I.

0. E. HECKMAN.

CROSS WHAPPING MACHINE. APPLICATION FILED IIIAII. 7. I9I6.

Lemme,

Patented Feb. 13, 1917.

2 SHEETS-SHEET 2.

@Hgo/m1 ma ORA E. BECKMAN, OF AKRON, OHIIO.

CROSS-WRAPPING EVIACHNE.

Specification. of Letters Patent.

Patenten net. is, tera.

implication filed March 7, 1916. Serial No. 32,640.

To all whom t may concern:

Be it known that ll, ORA E. HECKMAN, a citizen of the United States, residing at Akron, in the County of Summit and State of Ohio, have invented a new and useful Cross-lVrapping Machine, of which the following is a specication.

My invention relates to improvements in cross wvrapping machines and has more especial reference to a machine of this character designed to cross wrap the inner tubes of pneumatic tires.

rlhe object of the present invention is to provide a machine designed to cross wrap the inner tubes of pneumatic tires.

A further object is to provide simple and efficient means for moving the tape carrying spool back and forth, spirally wrapping and cross wrapping the convolutions of tape therefrom.

A further object is to provide means whereby a strip of tape is held taut during the time it is unwound from the spool and wound upon the tube.

A still further object is the provision of means for changing the position of the tape carrying spool as the movement of the car- .i riage, upon which said spool is mounted, is

reversed.

A still further object is the provision of means whereby the carriage may be moved backward or forward as desired with relation to the mandrel upon which the tube is carried, irrespective of the screw threaded shaft which operates the carriage.

A further object is the provision of a device which is adapted to wrap each convolution of the tape a half of a lap over the preceding convolution thus producing a smooth tube.

With these objects in view the invention consists in the novel construction and arrangement of parts, hereinafter described, illustrated in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that various changes in the form, proportions, size and minor details of construction may be made within the scope of the appended claims without departing from the spirit or sacrilcing any of the advantages of the invention.

ln the drawings:

Figure 1 is a side elevation of the cross wrapping machine constructed in accord ance with my invention.

Fig. 2 is a top plan view of the same. f

Fig. 3 is a fragmentary elevation on an enlarged scale of a'portion of the mandrel and the carriage upon which the tape spool is carried.

Fig. 4 is a vertical transverse sectional view through the machine.

Fig. 5 is an enlarged sectional view showing the means for operatively connecting the carriage with the screw threaded shaft.

Fig. 6 is an enlarged detail view showing the means of connecting one of the spindles upon the carriage with the tape spool.

Fig. 7 isla detail sectional view of the means for slidably operating the shaft in the tail stock.

Similar numerals of reference indicate corresponding parts throughout the several figures of the drawings.

Referring more especially to the construe tion illustrated in the accompanying drawings the numerals 1-1 indicate end frames upon which the bed 2 of the machine is mounted, said bed being composed of the spaced channel irons as best illustrated in Fig. 4. At one extremity of the bed of the machine, a head stock is provided, said head stock comprising the brackets 3 upon which suitable bearings 4 are provided, a shaft 5 being journaled within said bearings and carrying a drive pulley 6. A conical cup 7 is provided upon the inner extremity of the shaft 5.

tail stock 8 is provided in the opposite extremity of the bed and may be mounted for longitudinal adjustment upon said bed in any suitable and well known manner. Brackets 9 are formed upon the tail stock, each of said brackets being provided with a bearing 10 within which is rotatably and slidably mounted a shaft 11. A cone 12 is carried upon the inner extremity of the shaft 11. A fixed collar 13 is provided upon the shaft 11 intermediate the bearings 10 and said vcollar is provided with a groove within which is rotatably mounted a ring 14, said ring being provided with diametrically opposite pins l5. A lever 16 is pivotally connected at 17 to an arm 18 formed upon the tail stock 8, said lever being provided with a yoke portion 19 having suitable aper tures which receive the pins 15. A spring 2O is interposed between the outer bearing 10 and the collar 13 tending to normally hold saidl collar against said inner bearing. A hollow mandrel 21, adapted to receive the tube to be cross wrapped, isplaced in position upon the machine, the cone 12 entering one extremity of said hollow'mandrel while the other extremity of said mandrel is located in the conical cup member 7, the

`spring forcing the cone 12 firmly into the'.

extremity voi" the mandrel thus holding the mandrel tightly between said cone and said cup member and causing the same to be rotated with the rotation of the shaft 5.

A screw threaded shaft 22 is journaled in suitable bearings 23 mounted upon the side frames 1, said shaft being preferably provided with the left and right screw threads 24 communicating at each extremity of the shaft and `forming a diamond screw thread although the ordinary worm screw may be provided upon sa'id shaft if desired. The sprocket wheel 25 is provided upon one extremity oof the shaft 22 and is connected by means of a chain '26 to a sprocket wheel 27 mounted upon theshaft 5.

A rod 28 is carried 'between the end frames 1 and spaced from the screw fthreaded shaft 22. Slidably mounted upon mounted upon the carriage 29, above the the rod 28 is a carriage 29 preferably of channel shape. A cylindrical casing 30 is screw threaded shaft 22 and slidably mounted within. said casing is a rod 31, the

lower extremity of which is adapted to engage the screw threads 24 upon the shaft 22. A collar 32 is fixed upon the rod 31 and l adapted to normally engage the upper wall of the carriage 29, a spring 33 being provided betweenv said collar and the upper wall of the'casing 3() for the purpose of normally holding the extremity of the rod-1h31 in en-A gagement with the screw threads 24.

Al projection 34 is provided upon the upper wall of the casing and the/ rod 31 is provided with a stud adapted to normally rest upon the top wall of the casing r30 as shown in Fig. 5, but when it is desired to move the rod out of engagement with the screw threads 24 in order to slide the carriage lndependently ofthe screw threaded shaft 22, the handle 36 upon the rod 31 is grasped and the Jrod is raised to a height' bringing the stud 35 above the level of the 'projection 34 upon the casing, the rod then eing given a half turn allowing the stud 35 to rest upon the projection 34 thusholding the extremity o the rod out of engagement with the screw threads upon the shaft 22.

The carriage 29 is provided with the arm 37 and pivotally mounted upon said arm is the frame 38 which carriestthe tape spool, said frame being provided with the yoke portion 39, which is pivotally .connected to the arm 37 bymeans of a bolt 40 or the like.

The frame 38 is of substantially U-shape,

the roller 41 connecting the extremities of said frame. The tape spool is carried upon i the spindles 42 and 43, said spindle 42 being provided with a pyramidal extremity 44.,

The spindle 42 is journaled in the bearing 45, saidbearing being provided in one side of the frame 38 and a tension wheel 46 is provided upon the outer extremity of said spindle, a brake band 47 being connected at one extremity to the frame 38, an adjusting screw 48 being provided` for adjusting the` tension upon said brake band. r1`he free extremity of the brake band is connected to vwhich is provided upon the slidable spindle43, a spring 58 tending to normally urge the lever toward the frame 38 thus holding the spindle 43 in. engagement with the tape spool. rIhe spool 59 containsfa roll of tape 60 of the ordinary form used for cross wrapping inner tubes. For the purpose of feeding the tape to the mandrel at the proper angle a curved tension board 61 is provided 'upon the bed of the: machine in the path of the tape from the carriage to the man-` In operating the device to cross wrap a tube the mandrel 21 is placed in-y position upon the cone 12 and within the cup 7 'as shown` in the drawings and the pulley 6 operated in any convenient and well known manner.` The rod 31 upon the carriage will be placed in the position best shown in Fig.

'5, bringing the extremity thereof into engagement with the screw threads 24 upon the shaft 22 and as said shaft is rotated the carriage will be moved parallel to the mandrel'21, automatically reversing itsV motion asit comes to each extremity of the mandrel, the `frame within whichv the tape Spool is carried automatically swinging upon its pivotal point as .the direction of the carria e .-.is reversed. The screw threads 24 upon t e shaft 22 are of the proper pitch to cause the each revolution of the tube.

Although the drawings and above specication disclose the best mode in which I have contemplated embodying'my invention I desire to be not limited to the details of such disclosure, for in the further practical application of my invention, many changes in form and construction may be made, as circumstances require or experience sug- 13u tape to make a half lap upon the tube with,

gests, without departing from the spirit of a frame, a mandrel rotatably mounted upon the invention, Within the scope of the appended claims.

l claim:

1. In a machine of` the character described,

a frame, a mandrel rotatably supported upon said frame, a carriage slidably mounted, upon said frame, a tape spool carrying frame pivotally mounted upon said car rage, a tape spool mounted Within said tape spool carrying frame, a tension device con- Ynect'ed to said tape spool, means for rotating said mandrel, a curved tension board located between said mandrel and said tape spool, the tape from said tape spool arranged to pass over said tension board, means for moving said carriage in a path parallel to said mandrel and means ,for reversing the direction of said carriage adjacent each extremity of said mandrel, said tape spool carrying frame arranged to be oscillated as the movement of the carriage is reversed. 1

2. In a machine ofthe character described,

said frame, a carriage slidably mounted upon said frame, ,a tape spool o'arnying frame pivotally mounted upon said carriage, a tape spool mounted Within said tape spool carrying frame, a tension device connected to said tape spool, means for rotating said mandrel, a tension roller located in the forward extremity of said tape spool carrying frame, a curved tension board provided upon the frame adjacent said mandrel, thetape from said tape spool arranged to pass over said tension board, means 'for moving said carriage in a path parallel to said mandrel, and means for reversing the direction of movement of'said carriage adjacent each extremity of said mandrel, said tape spool carrying frame arranged to be oscillated as the movement ofo the carriage is reversed. n

In testimony that l claim the above, li have hereunto subscribed my name.

ORA n. HECKMAN.