MENTS IN APPARATUS FOR ADJUSTING THE PLATENS OF MACHINES FOR CUTTING AND SHAPING PAPER, LEATHER, AND OTHER MATERIALS
Year: 1885

page_text: I, ROBERT BROWN of 14 New Street Kennington Park Road in the County of
Surrey Engineer do hereby declare the nature of my said Invention for IMPROVE-
MENTS IN APPARATUS FOR ADJUSTING THE PLATENS OF MACHINES FOR CUTTING
AND SHAPING PAPER, LEATHER, AND OTHER MATERIALS to be as follows:-
I construct a combined sliding joint-block and screw and fit the joint-block to
slide freely in or between guides attached to the platen of the cutting machine
upon which platen the inaterial to be cut into shape, such as paper, envelopes, lead,
leather, leather cloth, cork, felt, cloth, woven fabrics, gutta percha, india rubber,
wood, sheet metals &c is placed, together with knife edged cutters of the required
design the joint-block is bored and a joint-pin fitted thereto by which it is
coupled up or connected to the connecting rod or eccentric rod as the case may
be which communicates the required motion to the platen from the crank or
eccentric of the cutting machine.-I fix the screw of the joint-block to a nut of
cylindrical form and keep the latter in position in a recess formed in a carriage
hereinafter called the nut carriage (which may be separately fitted to or preferably
cast in a body with the guides) in which recess the nut is free to revolve.-I make
a hole in the nut carriage parallel with the guides at right angles to and across the
recess through which the screw passes in its passage through the nut.
I cut or otherwise form teeth on the periphery of the nut suitable to gear with a
screw or worm in order to form the nut into a combined nut and worm-wheel.-
I gear into the latter a screw or worm fixed to or cut on a shaft hereinafter called
the worm-shaft which is free to revolve in bearings attached either to the platen,
guides, or nut carriage as may be convenient and allow a sufficient length of the
worm-shaft to project beyond one side of the platen (preferably the front) on which
I attach a lever or wheel in order to actuate it as desired.

page_text: As two or more of the before mentioned arrangements are required to work
simultaneously in order to adjust the platen of a cutting machine to suit various
depths of cutters I attach a bevel cog wheel on the projecting end of each worm-
shaft and fix bevel cog wheels to gear into same (one to each) on a shaft free to
revolve in bearings attached to the platen at right angles to the worm-shafts the
necessary adjustment being effected through the shaft fixed at right angles by
means of a hand wheel or other leverage attached to the latter.
By the foregoing arrangement no alteration is required in the length of the
connecting or eccentric rods in order to adjust the platten which last together with
the guides, nut carriages, bearings or brackets may be cast all in one piece or in
separate parts as may be preferred or convenient.
Dated thin tanth don no Qutamho- 100%

page_text: Materials.
I ROBERT BROWN of 14 New St Kennington Park Road in the County of
Surrey Engineer do hereby declare the nature of my invention for IMPROVEMENTS
IN APPARATUS FOR ADJUSTING THE PLATENS OF MACHINES FOR CUTTING AND
SHAPING PAPER LEATHER AND OTHER MATERIALS, and in what manner the same
is to be performed particularly described and ascertained in and by the following
statement
I construct a combined sliding joint-block and male screw the screw being firmly
secured at one end of the block and I fit the block to slide freely in or between
sliding guides attached to or cast in a body with the bottom platen of the machine
on which the material to be cut into shape is placed.-I bore the sliding joint-block
and fit a joint pin thereto by which it is coupled up with or connected to the con-
necting rod or eccentric rod which communicates the required rising and falling
motion to the bottom platen from the crank, cam, or eccentric of the machine.
I construct a combined cyndrical or disc nut and worm wheel, the bore hole of which
is screwed with a female thread to fit the male screw attached to the sliding joint
block and I cut or otherwise form teeth on its periphery or on one side suitable to
gear into or with a screw or worm-t
_this combined disc nut and worm wheel is held
in position in or between the sides of a recess or slot formed in a carriage attached
to or cast in a body with the sliding guides and bottom platen before mentioned
and is hereinafter called the nut carriage the disc-nut being free to revolve therein
on the screw fixed to the sliding joint-block at right angles to and at one end of
the sliding guides which latter together with the bottom platen also traverse with
it in its course up or down the screw.-I make a transverse hole across the recess
in the nut carriage parallel to the bore hole of the disc-nut for the passage of the
screw through the same. I gear into the worm wheel or teeth formed on the
periphery or side of the disc nut a screw or worm fixed to or cut on a shaft herein-
after called the worm shaft which is free to revolve in bearings attached to the nut
carriage sliding guides or bottom platen as may be convenient which worm shaft on
being turned in either direction communicates the necessary revolving motion to
the disc-nut on the screw of the sliding joint block consequently it raises or lowers
the bottom platen as desired.
For the purpose of coupling up two or more worm shafts and adjusting apparatus
as may be required for the purpose of adjusting one bottom platen I key a toothed
bevel wheel on each worm shaft attached thereto and fix a regulating shaft at right
angles to the same free to revolve in bearings attached to the bottom platen on
which I also key bevel toothed wheels, to gear into and actuate the wheels keyed
on the worm shafts, on leverage being applied to the regulating shaft by means of
a hand wheel or otherwise whereby any required number of adjusting apparatus
attached to one bottom platen are worked simultaneously,

page_text: In order that my invention may be more readily understood I will proceed to a
further explanation of the same by the aid of the accompanying drawings in which
two sets of the foregoing adjusting apparatus are represented attached to one
bottom platen and coupled up by a regulating shaft and geared wheels as herein-
before described.
Figures 1 and 2 respectively represent side and front views of my invention
Figure 3 is a plan of same and figures 4. 5. 6 and 7 working parts thereof in detail
on a larger scale than the foregoing.
The adjustment of the heigth of the bottom platen A is effected by causing the
disc-nuts C. C. to revolve in one or the other direction as required and traverse the
screws, B. B fixed to the sliding joint blocks B¹ B¹ which action raises or lowers
the nut carriages c. c. in which the disc nuts C. C are confined and consequently
raise or lower the bottom platen A of the machine to which the nut carriages c. c
are attached The revolving motion of the disc-nuts C. C. is produced by means
of the worm wheels C¹ C¹ the teeth of which are formed on their peripheries. and
gear into the worms D. D fixed on the worm shafts D¹ D¹ by which they are
actuated, on leverage being applied to the latter through the geared wheels F F
and regulating shaft F1 by means of a lever on ther hand wheel L. The sliding
guides E. E. are fixed to the bottom platen of the machine to act as guides for and
slide up or down the sliding joint blocks B¹ B₁ and the latter are coupled up to
the connecting or eccentric rods K. K. of the cutting machine by the joint pins J. J.
which communicate the notion required to the bottom platen A in the ordinary
manner from a single or the double crank R. cams or eccentrics the shaft of which
revolves in bearings fitted to the frames S. S. of the machine and by my invention
the adjustment of the bottom platen can be made to suit varing depths of cutters
without the aid of blocking.
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--
1st The combined disc nut O and worm C¹ (Fig. 4) substantially as described
and represented.
2nd The worm D and the worm shaft D¹ (Fig. 5) substantially as described.
3rd The combined screw B and sliding joint block B¹ (Fig. 6) substantially as
described and for the purposes set forth.
4th The sliding guides E E and the disc-nut carriage c (Fig. 7) in combination
with or attached to the bottom platen A of a cutting machine substantially as
described.
5th Figures 4. 5. 6. and 7 in combination as single sets of apparatus or in
combination with the gear wheels F F and regulating shaft F¹ for coupling up two
or more sets of the apparatus on one bottom platen substantially as and for tho
purposes set forth described and represented.
Dated this 16th day of April 1886.