US1689242A - Automatic stopping means - Google Patents

Description

Oct. 30, 1928.

S. HALVORSEN AUTOMATIC STOPPING MEANS Original 'Filed May 20. 1922 Patented Oct. Y 30, 1928.

UNITED STATES PATENT oF mcE.

SEVERIN HALVORSEN, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE NEWSPAIPEIt STUFF- ING- MACHINE COMPANY, OF SEATTLE,

IN'GTON.

WASHINGTON, A CORPORATION OF WASH- AUTOMATIC STOPPING MEANS.

Original application filed May 20, 1922, Serial No. 562,462. 'Divided and this application filed June 5,

- 1924. Serial No. 718,169. I

My invention relates to means for autw nlatically stopping machinery, particularly in case of trouble or defective action in the operation of the machinery.

The principal object of the invention is to provide simple, practical and advantageous automatic stopping means.

Another object of the invention is toprovide a construction by which certainand renewspapers, but it will be readily seen and understood that the invention is capable of various other applications and uses.

In the drawlngs Fig. 1 is an end view partly in cross section of the newspaper stuffing machine provided with an automatic stopping mechanism embodying my present invention; a

Fig. 2 is a side elevation of the automatic stopping mechanism;

Fig. 3 is a, longitudinal section of a portion of such mechanism; and

Fig. 4 is a cross section taken on line 44: in Fig.2.

Referring to the drawings, I show a newspaper stufling machine which is not claimed of itself herein, and which accordingly will not be described atlength. In general it may be said tobe provided with a trough 1 into which newspaper and cover sections 2 are fed, and then moved along the trough 1. As moved along, insert sections 3, 4 and 5 are fed into the cover sections 1 and then the completed or stuffed paper is discharged.

In Fig. 1 I show chains 66 for moving the paper sections along the trough 1, and

these are driven by .other. chains 77 by means of a drive shaft 8 connected by pinions 9 and 10 with a vertically arranged shaft 11 which is'in turn connected by pinions 12 and '13 with another and for present purposes a main drive shaft 14.

In newspaper stuifing machines such as above set forth, it is possible that at timesthere may be defective feeding of the paper sections or clogging in some way of the sections in the trough 1, and this may result in forcing such a jam in the trough that a. heavy strain will be brought on the machinery and some breakage might result in case that strain was not relieved. Such a dangerous strain might result in the machine from other causes. n

In accordance with my invention I provide means by which the machine will be automatically stopped in case a dangerous strain develops inthe machine, ,either from clogglng of paper sections in the trough, or otherwise. I To such end I make the drive shaft 1 1 jointed, having two parts 14. and 14 (Fig. 2) and connect thesetwo partstogether sothat normally they will automatically drive as a single shaft, but in case a dangerous'strain takes place, one part will be stopped by the strain before the same reaches the danger point and the entire machine thereupon be stopped, thereby avoiding-injury'or damage "to the machine and allowingopportunity for' removal of the trouble.

y In the arrangement herein shown, which is one of a number of desirable arrangements which could be employed, I connect the shaft sect-ions 14 and 1 1 together by means of a pin 15 which is of suflicient strength to cause the part 14* which is connected with the motor or prime mover or main driving shaft, to turn the part 14? during all normal conditions, but said pin 15' is sufficiently weak to result in its being broken in case an undue strain occurs to mechanism attached to the shaft section lt, as for example a jam in the trough l'resulting in the bringing of a heavy strain upon the mechanism moving the paper sections in the trough, and thereby imposing such heavy strain upon the shafts 8 and 11.

I further provide an electricalconnection arrangement by'which an electrical circuit may be closed when pin 15 is broken and shaft section 14 is stopped and section 1 1 is therefore allowed to move by itself, which electrical connection automatically stops the prime mover or disconnects or stops the main driving shaft, thereby stopping the entire machine. v

The electrical connectionshown comprises a pin 17 mounted in a slot 18 in a collar or head 19 on shaft 'section 14", said pin 17 being subject to a spring 20 tending to force it out of said slot 18. Pinion 13 is provided with an insulating strip or segment 22, against which pin 17 normally is pressed, said pin 17 contacting with the metal of pinion 13, however, when pin 15 is broken and shaft sect-ion 14 with collar 19 moves or rotates relatively to shaft section 14 and pinion 13. A metal collar 23 with radial flange 24 is provided and fitted on an in sulating sleeve 25 having an annular projecting portion 26, on which metal collar 23 fits, and an insulating disk' 27 is fitted on the other side of metal flange 20, thereby insulating said collar 23 and flange 24. The members 19 and 25 are fast on shaft section 14, so that said section 14 will turn section 14 through pin 15. Member 19 has an insulating sleeve 28 in which pin 17 fits and moves. Spring 20 makes contact with flange 24 through aperture in disk 27, thereby establishing electrical communication between pin 17 and collar 23 but said pin is otherwise insulated by reason of insulation 26, 27 and 28. A brush 3O fits on collar 23 which thereby acts as a commutator and an electrical conductor 31 is connected by binding Ipost 32 with brush and supported by racket 33 so that electrical connection may be made between conductor 31 and pin 17, as a result of which when pin 14 breaks pin 17 will complete an electrical circuit from 31 to pinion 13 and shaft section 1 1 and this I electrical circuit may contain any suitable stopping mechanism, as for example, a switch which may be arrangel so that when its circuit is closed it will open a motor circuit, the motor forming the prime mover for the machine, or the circuit when closed may operate a magnetic device capable of shifting a belt or otherwise throwing power ofl from the machine in case it is directdriven by some power mechanism or shafting.

Thus it will be seen that the invention permits the automatic stopping of the machine in case a dangerous strain is placed ,upon it, and that this is accomplished in a simple and expeditious manner.

It will be understood that changes and modification may be made without departing from the spirit of the invention.

What I claim is: i

1. In a machine of the character described, the combination of shaft sections, means providing a connection between said sections, one of said sections having an insulating block, the other having a movable contact making element which is held out of electrical connection by, means of said block, said movable contact making element being movable relatively to said block to thereby complete an electrical connection upon the separation of the connection.

2. The combination of separate shaft sections, one of which is provided with a metallic member having an insulating block and the other of which is provided with an insulating sleeve carrying a commutator ring and a metallic member mounted on said insulating sleeve and containing an insulating sleeve having a pin adapted normally to contact with said insulating block, a spring tending to push said "pin outwardly, a pin between the metallic members on said shaft sections and a brush on the metallic member on the second mentioned shaft section,

In witness whereof, I hereunto subscribe my name this 28th day of May, A. D., 1924.

SEVERIN HALVORSEN.

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