Improvements in or relating to Devices for Punching Paper and the like.
Year: 1899

page_text: Date of Application, 30th June, 1899-Accepted, 5th Aug., 1899
COMPLETE SPECIFICATION.
Improvements in or relating to Devices for Punching Paper and
the like.
I, HERBERT PRICE LAVENDER, of 65, Bridge Street, Walsall, in the County of
Stafford, Engineer, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:―
This invention relates to devices for punching paper and the like, particularly
those intended for punching holes in papers to be placed on a file, and has for
its object to construct a simpler form of punch than hitherto.
According to this invention the punches, of which there are usually two,
lie in brackets within which they can slide. A rod provided with a protecting
handle by which the device is operated has its ends passed through the trans-
verse holes in the punches. This rod carries securely fixed upon it, near each
end, a cam, which when the handle is operated and the rod rotated come in con-
tact with suitable projecting parts on the brackets and cause the rod and with it
the punches to move downwards towards the die-plate.
In the accompanying drawings
Figure 1 is a plan of the improved punching device.
Figure 2 is a section on the line 2-2 of Figure 1.
Figure 3 is a similar section showing the parts in the position when the
punches are in operation and just entering the dies, and Figure 4 is a front view
of one of the brackets.
Like letters indicate like parts throughout the drawings.
Upon a base-plate A I mount two brackets B which are slotted as at B and
perforated to allow the punches C to slide freely in them. About the centre
of each punch is bored a transverse hole within which lies one end D' of a
rod D, which is thus pivotally carried by the punches. Keyed on rigidly
mounted upon the rod D) near each end and preferably between the brackets B
are two cams E. Each of these cams lies partially between projecting flanges B*
and B formed on the brackets B, so that when the rod D) is rotated by means
of the handle F, the cams E coming in contact with the flanges B2 will force the
punches C down into the holes A in the base-plate A as shown in Figure 3,
the punches C being guided in the holes in the brackets B. On returning the
handle to the position shown in Figure 2, the punches C will again be raised
by reason of the cams E coming against the flanges B³.
If desired the cams E may be mounted on the ends of the rod D outside the
brackets B or a single cam may be mounted upon the centre of the rod, suitable
bearing surfaces with which this cam may come in contact being provided. It
is obvious that the device may be constructed with only one or with more than
two punches if so desired. If a single punch is needed only one bracket such
as B B B 13 is employed the handle Flying on either side and the rod D
passing right through the punch.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
1. In a paper punching device the combination with a rod such as D D
pivotted at its ends in sliding punches C of cams such as E upon the rod sub-
stantially as and for the purpose described.
2. In a paper punching device the combination with a rod carrying cams
such as E and punches C of brackets such as B B1 B2 B3 constructed to serve as
guides for the punches and bearing surfaces for the cams substantially as described.
3. The complete paper punching device substantially as described or illustrated
in accompanying drawings.
Dated thie 98th day of June 1900