Improvements in Paper Cutting Gauges for Guillotine Cutting Machines, whereby Paper of a Narrow Gauge may be Readily Cut.
Year: 1896

page_text: Date of Application, 12th Nov., 1896-Accepted, 12th Dec., 1896
COMPLETE SPECIFICATION.
Improvements in Paper Cutting Gauges for Guillotine Cutting
Machines, whereby Paper of a Narrow Gauge may be
Readily Cut.
1, HARRY DADE of 7 Cobbold Road, Leytonstone, in the County Essex,
Commercial Traveller, 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 has reference to that class of paper cutting machines known as
the guillotine type, and is especially designed for the purpose of facilitating and
extending the use of a certain contrivance, invented and patented by John Daly,
of Dublin, under Letters Patent dated Fifth day of June, 1895, numbered 11,056
and entitled "An improvement in guillotine cutting machines, whereby paper of a
narrow gauge may be readily cut' which said Letters Patent have been duly
assigned to me by deed bearing date the 27th day of June, 1896, and registered
at Her Majesty's Patent Office the 9th day of July 1896.
In cutting machines of the class referred to, considerable difficulty is experienced
in cutting narrow strips or bands of paper owing to the cross section thickness of
the clamping block coming in contact with the sliding back of the cutting table.
The object of the above recited invention is to overcome this difficulty, and the
object of my improvements is to further develope the said invention and increase
its effeciency for the purpose for which it was designed.
The accompanying drawings will enable these improvements to be more readily
understood and applied in practice.
Fig. 1 represents an ordinary paper cutting machine of the guillotine type
shewing the application of the original contrivance.
Fig. 2 shews the original contrivance detached, and
Fig. 3 shews the same, with my improvements applied thereto, and combined
with a second contrivance, as hereinafter more fully described.
Firstly I propose to construct gauges of different thicknesses and to use same
singly or combined according to the quantities of paper to be cut. Thus for
small quantities of paper I may use the gauge in its original form and for large
quantities, I arrange one over the other and consolidate both by suitable bolts
passed through the upper and penetrating the lower one.
Secondly I propose to provide the thick, or upper gauge with additional lugs or
stops as presently described.
Taking the original gauge (Fig. 2) A is a rectangular plate provided with
lugs b, b, hinged in recesses formed in its front edge and maintained in an elevated
position by feather springs C, C. A. raised ledge d is formed on the back edge of
the plate to impart strength and increase the contact surface between the plate
and the ordinary sliding back e (Fig. 1) of the machine.
The action of the contrivance is as follows:-
When it is placed in position (Fig. 1) the lugs stand upright and constitute a
stop or back against which is pressed the edge of the paper to be cut, and as the
clamping block descends the lugs yield or recede until the block closes firmly on
the paper, whereupon the knife acts in the usual manner.
Thus it will be readily perceived that although the lugs act as a stop or back for

page_text: the paper, they offer no resistence to the descent of the clamping block which can
be brought down as far as the thickness of the gauge will permit.
By the use therefore of this contrivance it is obvious that strips or bands of
paper of the narrowest practical width can readily and conveniently be cut
irrespective of the thickness of the clamping block, which before the date of the
said recited Letters Patent limited the operation of these machines.
My improvements as already stated consist in making these plates of different
thicknesses and using them singly or combined as required.
Fig. 3 illustrates how I accomplish this.
Here two plates are shown secured, one over the other by means of vertical bolts
provided with winged heads, which are recessed in the cavities g, g, so that a level
surface is presented to the descent of the clamping block.
When this upper gauge is used singly it is obvious that these bolts may be
completely removed.
The additional stops which I propose to use are shewn at 1, 2 and 3 on the
front edge.
These stops consist of suitable metal plates with bevel side edges and are
arranged to slide vertically, in beveled slots, being maintained in a raised position
by suitable spiral springs, placed underneath, which yield when the stops are
pressed down by the clamping block, and re-expand when the block is raised. The
lower end of each spring is secured by a screw to the bottom of the beveled slot
and its upper end is secured to the base of the stop by similar means.
According to my invention I may use more than two lugs in the front edge of
the gauge should I deem it necessary or more convenient for the class of work to
be executed.
Having now particularly described and ascertained the nature of my said inven-
tion I would have it understood that what I claim is
First. In paper cutting machines of the guillotine class, the use and application
of a contrivance provided with the improvements as herein described whereby
strips or bands of a narrow width can readily be cut substantially as specified.
Second. In the operation of cutting narrow strips or bands of paper a contrivance
as herein described, provided with my improvements and used in combination with
cutting machines of the guillotine class substantially as specified and set forth.
Dated this 9th day of November 1896.
J. K. FAHIE & SON,
9 Westland Row, Dublin, Agents for Applicant.