US1192738A - Safety device for presses. - Google Patents

Description

G. E. BILLEB.

SAFETY DEVICE FOR PRESSES. APPLICAT'ION FILED JUNE 11, 1913.

1,1 92,7 v Patented July 25, 1916.

2 SHEETS-SHEET I.

WITNESSES INVENTOH G. E. BILLEB.

SAFETY DEVICE FOR PRESSES.

APPLICATION FILED JUNE H, 1913.

1 1 92,738, Patented July 25, 1916.

2 SHEETS-SHEET 2.

i G WxeW at. W 13%414/ 1 ix GEORGE E. BILLEB, OF BENWOOD, WEST VIRGINIA, ASSIGNOR TO WHEELING STAMPING COMPANY, OF WHEELING, WEST VIRGINIA, A CORPORATION OF WEST VIRGINIA.

SAFETY DEVICE FOR PRESSES.

Specification of Letters Patent.

Patented July 25,1916.

Application filed June 11, 1913'. Serial No. 773,023.

To all whom it may concern:

Be it known that I, Gnonon E. BILLEB, a citizen of the United States, residing at Benwood, Marshall county, State of West Virginia, have invented a new and useful Improvement in Safety Devices for Presses and the like, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which:

Figure 1 is a front elevation of a portion of a stamping press showing my invention applied thereto; Figs. 2, 3, i, 5, 6 and 7 are detail views of parts of a device embodying my invention and hereinafter more fully described.

My invention has relation to safety devices for power-operated die presses and the like, and is designed to provide means of simple and effective character for preventing injury to the hand of the press operator,

My invention is especially applicable to presses for stamping and shaping various metal articles which are of such a character that the article blanks must be placed upon the stationary die or anvil of the press by hand. In the operation of such presses, it frequently happens that the operator will start the press into operation before withdrawing his hand from the path of the movable press head and'die, and-is thereby seriously injured. My invention provides means whereby in any "such case, the hand of the operator will be positively moved out of the path of the movable press head and die before the injury can occur.

Referring to the accompanying drawings, in which I have shown one form of my invention and which will now be described, the numeral 2 designates a portion of the frame of a die press of well known type, 3 is the stationary die or anvil, and 4: is the vertically movable press head carrying the movable die member 5. r I

6 is a bell crank member which is pivoted at 7 to the movable press head 4, and which is shown as having a socket portion 8 in one of its arms in which is inserted a rod 9. The other arm of the bell crank member is slotted, as shown at 10, and engages a pin or stud 11 which is carried by the fixed frame pgrtion 2 of the press. The bell crank memr is pivoted to the forward side of the press head in such position that the rod 9 extends downwardly in front of the stationary die or anvil 3. When the press head makes its down stroke, the engagement of the stud. 11 with the slottedarm of the bell crank oscillates the latter and causes the rod 9 to swing or oscillate transversely. If the operator has not withdrawn his hand, this rod will strike his hand or forearm and positively move it to one side and out of the path of the die 5. Upon the return stroke of the press head, the device is moved back to its original position. If desired, the rod 9 may be covered with a suitable yielding covering, as indicated at 12, in Figs. 2 and 3. In order to provide for adjustment of the pin and stud 11, I have shown the latter as being carried by a bracket 13, which is mounted to slid vertically in a guide member 14:, secured to the frame 2. i

' The advantages of my invention will be apparent to those familiar with the art since it provides means of extremely simple character which will positively prevent injury to the operator.

The operation of the safety device is independent of the control of the operator, so that each time the press head descends, the device must operate.

I am aware of the fact that, prior to my invention, it has been proposed to provide safety devices for brushing or moving away the hand of the attendant, but in so far as I am aware, these devices have been connected to the foot lever of the press which is used by the operator to start the press into operation. This necessitates the employment of a number of connecting parts between the foot lever and the safety device and if anything happens to these connections, the safety devices will not operate. In my invention, the safety device must operate each time the press head descends.

It will be understood that my invention is susceptible of many different embodiments within the scope of my broader claims, the essential feature of the invention consisting in the provision of a member arranged to move across the front of the dies in such a manner as to move or brush away the hand of the operator and actuated by a positive connection with the movable member of the press. This, of course, can be effected in various ways.

I claim:

1. The combination with a power-operated crank pivoted to the front of said head to swing transverselyacross the front of said head in a direction substantially parallel to the front face thereof, and having a depending guard arm and a connection between the bell crank and a fixed member of the press; substantially as described.

2. The combination with a power-operated press having a movable press-head, of a bell crank pivoted to the front of said head to swing transversely across the front of said other arm engaged with a fixed member of the press; substantially as described.

In'testilnony whereof, I have hereunto set my hand.

GEO. E. BILLEB. Witnesses:

1). J. MORRIS, M. B. BAILEY.

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