US1800245A - Embossing and like press - Google Patents

Description

April 14, 1931. w. H. BRECKNELL EMBOSSING AND LIKE PRESS FiledDec. 13, 1929 wvnvro/r.

Patented Apr. 14, 1931 PATENT OFFICE WILLIAM HENRY BRECKNELL, F SOMERSET, ENGLAND EMBOSSING AND LIKE PRESS Application filed December 13, 1929, Serial No. 413,828, and in Great Britain December 18, 1928.

This invention relates to presses such as are used for embossing.

According to the invention the pressing movement of the presser member towards the bed member is effected by the aid of a beam pivotally connected to the presser member, the beam being given a combined movement of rotation and translation. This may conveniently be effected by means of a main link pivoted to the beam at each end at a point remote from its pivotal connection with the presser member, the other end of the link being pivoted to the framework or bed of the press at some point on the opposite side of the bed face to the presser memher, the three pivot .points being in line or nearly in line in the position of maximum pressure. These main links and beam take all the reaction and relieve the frame of the 2 press. The press may be actuated by a hand lever adapted to effect the rotary movement of the beam. In practice it is convenient for the handle end of the lever to move in the opposite direction to the beam. For this purpose the lever may be fulcrumed to a pair of links or the like permitting the translatory movement and its lower end may be pivoted directly to the beam or to the main links.

A press according to the invention can be cheaply constructed by making most of its parts from standard stock materials.

One embodiment of the invention is illustrated by way of example in the accompany ing drawings, in which Figure 1 is a side View of the press with the presser memberin its uppermost position.

Figure 2 is a front view of Figure 1.

Figure 3 is a side view with the presser member in its lowest position.

The frame of the press comprises a pair of substantially L-shaped members 1, 2, conveniently of angle or T iron bent to shape 4 and cross connected where necessary.

Across the frame at the angle of the L is mounted a bed member 3, conveniently a bar of rectangular sectioned steel. To each end of the bed is pivoted a main link 4; say of steel flat the ivots 5 in the exam le illustrated being formed by turning the end of the bed member. Alternatively, a separate pivot pin may be inserted in a hole drilled in each end of the bed member. In either case the pin preferably enters a hole in the frame member and is pinned or nutted thereto as at 6. The presser member 7 is a similar bar between a guide plate 8 secured across the frame at the back and another guide plate 9 at the front. The plate 9 is made narrow to permit the swinging movements of the main links l. Alternatively it may be cut away or notched to allow this move ment.

The main links a are pivoted at their upper ends to a cross beam 10 which as shown is a bar of square section steel, but it may be of any section with a V edge at the bottom. This bar bears with its angle or V edge on the presser member 7 and relative sliding is prevented by pairs of pins 11 and 12 projecting from the presser member and co-acting with suitably shaped recesses in the beam. The front pair of pins 11 are placed out of line with the back pair 12 to prevent undue weakening of the beam by the recesses. It will be understood that the pins may be secured to the beam and the recesses provided in the presser member.

A hand lever 13 is pivoted near the end remote from the handle portion 14 to a pair of short links 15 one on each side, themselves pivoted to a cross member 16 joining the main frame members 1, 2, near their upper ends; or the member 16 may have journals passing through bearing blocks secured to the frame members. The end of the hand lever 13 is pivoted to the upper edge of the beam 10; as shown it is forked and encloses an eye member 17 bolted to the beam. Alternatively, the

beam may be recessed and a pivot pin passed through a hole drilled through the beam from end to end. In the latter case this same pin may form the pivotal connections with the upper ends of the main links 4.

The presser member 7 is permanently urged upwardly by helical springs 18 carried on pins 20 in the member 7' and bearing against fixed pins or lugs 19, 21, on the presser member and the guide plate respectively. The springs may instead be mounted at the back of the presser member and differently arranged springs may be used. For example, coil springs housed in recesseson each side of the presser member and/or bed, may be employed. A further alternative is to use counterweights.

Since the precise distance of the presser member 7 from the bed 3 at the position of.

m ximum compression shown in Figure 3 is in some cases rather critical, I prefer to provide a fine adjustment. This may take the form of an eccentric bush connection 22 between the bottom of each main link 4 and its pivot 5, suitable means such as a radial screw 23 in the link being provided to lock the bush. Where pivot pins separate from and inserted into the bed member 3 are used, the portions working in the apertures in the links may be eccentric to the bodies of the pins which are again provided with suitable locking means such as radial setscrews in the bed member. 'Alternatively, a wedge adjustment between the bed nember and platen or on the under surface of the presser member, may be used.

For some purposes the horizontal parts of the frame members 1, 2, are shaped to form runners to carry a sliding platen of any known or convenient pattern.

What I claim is 1. In a press for embossing and like purposes the combination of a bed member, a presser member guided to move towards and from said bed member, a beam pivoted on a longitudinal axis to said presser member, actuating means and link mechanism for controlling the beam to give it a combined movement of rotation and translation.

2. In apress for embossing and the like the combination of a frame structure, a presser member guided in said structure, a beam passing across said presser member and pivoted on a longitudinal axis thereto, a pair of links pivoted one to each end of said beam and to said frame structure and means for giving a rotary movement to said beam.

3. In a press for embossing and the like, the combination of a frame structure, a presser member guided in said structure, a beam pivoted on alongitudinal axis to said presser member, a pair of links pivoted to said beam and to said frame structure and means including a hand lever for giving a rotary movement to said beam.

and said beam.

4. In a press for embossing and the like, the combination of a frame structure, a presser member guided in said structure, a beam pivoted on a longitudinal axis to said presser member, a pair of links pivoted to said beam and to said frame structure, means for adjusting the effective lengths of said links, and means for giving a rotary move ment to said beam.

5. In a press for embossing or the like, the combination of a bed member, a presser member guided towards and from said pressor member, a beam passing across said presser member and having a longitudinal angle edge in contact therewith, actuating means and link mechanism for controlling the beam to give it a combined movement of rotation and translation.

6. In a press for embossing or the like, the combination of a bed member, a presser member guided towards and from said presser member, a beam pivoted on alongitudinal axis to said presser member, a pair of links pivoted at their upper ends to said beam, a pair of pivots on said bed member, an eccentric bush rotatable on each of said pivots and secured in the lower end of each of said links, and means for giving a rotary motion to said beam.

7. In a press for embossing and the like, the combination of a frame structure, a presser member guided in said structure, a beam pivoted on a longitudinal axis to'said presser member, a pair of links pivoted to said beam and to said frame structure, a

hand lever pivoted to said beam, and a second pair of links pivoted to said lever and said frame.

8. In a press for embossing or the like, the combination of a bed member, a presser member guided towards and from said presser member, a beam passing across said presser member and having a longitudinal angle edge in contact therewith, actuating means, link mechanism for controlling the beam to give it a combined movement of rotation and translation, and yielding means for maintaining contact between said presser member 9. A press for embossing and the like, comprising a pair of connected L-shaped frame members, a bed member secured to said frame members, a presser member guided between said frame members towards and from said bed member, springs urging said presser member away from said bed member, a transverse beam having an angular edgeforming a pivotal connection with said presser member, a pair of links pivoted at their upper ends to the ends of said beam and at their lower ends to the ends of said bed member, a hand lever pivoted to said beam, and a second pair of links pivoted to saidhand lever and to a member connecting said frame members.

10. In a press for embossing and the like,

WILLIAM HENRY BREGKN ELL.

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