US1259977A - Safety device for presses. - Google Patents
Safety device for presses. Download PDFInfo
- Publication number
- US1259977A US1259977A US18990117A US18990117A US1259977A US 1259977 A US1259977 A US 1259977A US 18990117 A US18990117 A US 18990117A US 18990117 A US18990117 A US 18990117A US 1259977 A US1259977 A US 1259977A
- Authority
- US
- United States
- Prior art keywords
- levers
- safety device
- press
- presses
- tray
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
- F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
- F16P3/18—Control arrangements requiring the use of both hands
- F16P3/24—Control arrangements requiring the use of both hands for mechanical controls
Definitions
- Fig. 2 is the broken top or plan view of the safety device.
- This invention relates to an improvement in safety devices for presses, and particularly to presses which are equipped with a. safety device operated by the simultaneous movement of two levers, such, for instance, as is shown in United States Patent 104637 granted December 3, 1912.
- the object of this invention is to provide a work-holding tray, and place the same in connection with one of the operating levers so that in the act of picking up a piece of work to be placed in the machine the operator depresses one of the levers.
- the invention consists in the construction as hereinafter described and particularly as recited in the claims.
- drop press of usual construction, and by the term drop press as herein used I wish to be understood as including any stamping press, die press, or the like, having a movable part.
- 3 represents the frame of the press; 4, the bed; and 5, the hammer or punch.
- the mechanism which these levers operate is not shown, as it forms no part of this invention.
- I employ a work tray, 8, provided at its forward edge with a lip, 9, which rests upon the lever, 7.
- the tray and lip are provided with downwardly projecting lugs, 10 and 11, which limit the downward movement of the lip, and as herein shown the tray is provided at its outer end with a block 12, which holds it in an inclined position.
- the operator places one hand on the lever, 6, and with the other hand picks up a. piece of work from the. tray andpresses upon the lip, 9, so as to depress the lever, 7, thus allowing the hammer to drop, which it can not do until both levers are simultaneously depressed.
- the operator places the piece of work in his hand beneath the hammer and in picking up the next piece depresses the lip, 9, thus saving two or three unnecessary movements.
Description
H. M. GREIST;
SAFETY DEVICE FOR PRES-SE8.-
APPLICATION mu) sums. 1911.
1 ,259,977. Patnted Mar. 19, 1918.
UNITED STATES PATENT OFFICE. HUBERT M. GREIST, OF HAVEN, CDNNECTICIIASSIGNOR TO THE GREIST MANU- FACTURING 00., OF NEW HAVEN, CONNECTICUT, A CORPORATION.
SAFETY DEVICE FOR PRESSES.
Specification of Letters Patent.
Patented Mar. 19, 1918.
Application filed September 6, 1917. Serial No. 189,901.
To all whom it may concern:
Be it known that I, HUBERT M. GREIST, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Safety Devices for Presses; and I do hereby declare the following, when taken in connection with-the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, in I Figure 1 view of a press provided with a safety device constructed in accordance with my invention. V
Fig. 2 is the broken top or plan view of the safety device.
This invention relates to an improvement in safety devices for presses, and particularly to presses which are equipped with a. safety device operated by the simultaneous movement of two levers, such, for instance, as is shown in United States Patent 104637 granted December 3, 1912.
In the use of presses equipped with a safety device which necessitates the simultaneous operation of two levers, it is necessary that the operator shall first place the article to be operated upon in the press, then move both levers, then pick up a second piece to be operated upon, place it in the press and then move the hand to the operating lever. The object of this invention is to provide a work-holding tray, and place the same in connection with one of the operating levers so that in the act of picking up a piece of work to be placed in the machine the operator depresses one of the levers. And the invention consists in the construction as hereinafter described and particularly as recited in the claims.
In carrying out my invention I have illustrated a drop press of usual construction, and by the term drop press as herein used I wish to be understood as including any stamping press, die press, or the like, having a movable part. 3 represents the frame of the press; 4, the bed; and 5, the hammer or punch. At the sides of the press are levers, 6 and 7, both of which mustbe simultaneously moved in order to allow the hammer to drop. The mechanism which these levers operate is not shown, as it forms no part of this invention. In connection with the machine thus described I employ a work tray, 8, provided at its forward edge with a lip, 9, which rests upon the lever, 7. Preferably, and as hereinshown, the tray and lip are provided with downwardly projecting lugs, 10 and 11, which limit the downward movement of the lip, and as herein shown the tray is provided at its outer end with a block 12, which holds it in an inclined position. In operation a piece of work having been placed between the bed and hammer, the operator places one hand on the lever, 6, and with the other hand picks up a. piece of work from the. tray andpresses upon the lip, 9, so as to depress the lever, 7, thus allowing the hammer to drop, which it can not do until both levers are simultaneously depressed. After the hammer rises the operator places the piece of work in his hand beneath the hammer and in picking up the next piece depresses the lip, 9, thus saving two or three unnecessary movements.
While I have shown the work tray at the left of the machine, it is apparent that it might be arranged at the right if so desired.
I claim:
' 1. The combination with a press and two operating levers therefor of. a work tray resting on one of the levers and movable when pressure is applied.
2'. The combination with a press of two levers for releasing the operating mechanism and a work tray provided with a lip bearing upon one of said levers and movable when pressure is applied.
3. The combination with a drop press of two levers for releasing the operating mechanism, a work tray, a lip hinged to said tray and bearing upon one of said levers and stop lugs depending from the adjacent edges HUBERT M. GREIST.
Witnesses ELIZABETH R. CYLKOWSKI, HERBERT B. Damon.
(topic: of thin patent may be obtained for five cents each. by addressing the Commissioner ot Patents.
Washington, D. 6."
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18990117A US1259977A (en) | 1917-09-06 | 1917-09-06 | Safety device for presses. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18990117A US1259977A (en) | 1917-09-06 | 1917-09-06 | Safety device for presses. |
Publications (1)
Publication Number | Publication Date |
---|---|
US1259977A true US1259977A (en) | 1918-03-19 |
Family
ID=3327657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US18990117A Expired - Lifetime US1259977A (en) | 1917-09-06 | 1917-09-06 | Safety device for presses. |
Country Status (1)
Country | Link |
---|---|
US (1) | US1259977A (en) |
-
1917
- 1917-09-06 US US18990117A patent/US1259977A/en not_active Expired - Lifetime
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