MACHINERY FOR DRESSING OR MOULDING BLOCKS OR PLATES OF WOOD AND OTHER MATERIAL
Year: 1884

page_text: I, HERBERT JOHN HADDAN, of 67 Strand, in the City of Westminster, Civil
Engineer, do hereby declare the nature of said Invention for MACHINERY FOR
DRESSING OR MOULDING BLOCKS OR PLATES OF WOOD AND OTHER MATERIAL, and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-.
The machine represented in the accompanying drawings figs 1 to 16 is set in
motion from the main driving shaft C provided with belt pulleys K..
On the shaft C is fixed the worm L serving to turn the worm wheel D which
carries a crank pin E. The connecting rod F transmits the crank motion through
arms Y to the shaft N which by means of the lever arms Z and the connecting
rods X, moves the shaft M with the toothed wheels 1 and 1¹ up and down.
To the two side frames B of the machine are attached the toothed racks 2, 2¹ gearing
into the tooth wheels 1, 11. The latter thus move the frame H provided with
toothed racks 3, 31 twice as far as the travel of the axis of the wheels
and 1',
whereby a large stroke of the wooden blocks to be shaped is thus obtained by a
small stroke of the crank and therefore with a small and compact machine. The
fly-wheel mounted on the shaft C sets in motion the wooden pulley O which
through Lelt G. sets in motion the cutter shaft T on which are fixed the rotary
cutting or shaping tools. The cutter shaft T is situated on a slide-rest V which is
made adjustable forward, backward and sideways, and the position of which is
determined and limited by an adjustable stop J in order to maintain the desired
depth of cutting, or the depth of the mouldings to be cut into the wood or blocks.
The cutter shaft with the tool Q is moved to and from the wood by turning the
crank W, the depth of the shavings being determined by the hardness of the
material to be shaped. The cranks V per.nit to shift the cutter shaft T sideways,
[thereby permitting to work long pieces of wood by means of a short and solid
cutter shaft. The bed U' of the slide rest may be placed oblique by means of the
slots u, in order to produce oblique or bevelled mouldings.
The sides R and R¹ of the frame H carrying the blocks are provided with
adjustable centres or pins, so that on turning the angular pieces of wood, the edges
of the mouldings may accurately fit each other without depending on the condition
of the surface of the raw material, Sare counterweights serving to balance the

page_text: weight of the frame H; they may be replaced by the weights St attached to thin
ropes as shown. The whole machine is mounted on the base-plate A, and the side
frames are connected by the head piece or cross beam A¹.
For the purpose of removing the tool from the block of wood during the return
travel, the machine is provided with an arrangement represented in Fig. 10.
The driving mechanism above described is mounted on side pieces P connected
by cross barst and movable on the axle a. The carriage or block-holder H
is movable up and down by the hand lever b and comes in contact with the
disengaging tappets & at the highest and lowest point of its travel, whereby the
sector is caused to move the cam g alternately forward and backward, owing to
which the mechanism movable on the axle a is placed oblique for some millimetres,
so as to permit the cutting tool to pass freely during the return stroke.
For the purpose of cutting moulded polygonal disks, plates and similar pieces, in-
which the lines or surfaces to be cut by the shaping knives cross each other for
producing various patterns, the machine is provided with a special adjusting
mechanism constructed as follows:
l
The central rib H¹ of the working frame H is provided with an aperture h,
On the hub of the disk 8 is
Figs 6 to 8, serving to receive the pivot of the disk s.
fixed a carrier K connected with the plate on which are placed the blocks of
wood to be worked by the machine. The blocks of wood secured to the plate are
brought into contact with the rotary cutters or shaping tools by the up and down
motion of the frame. In order to adjust the disks or plates in any determined
degree or manner, the disk s is provided with teeth s¹ (Fig. 5) into which engages
After
the adjustable short rack thereby securing the disk s in its position.
withdrawal. of the rack ", the disk s with the block of wood may be turned,
whereby various angles of cutting lines and consequently any number of different
patterns may be produced; the profile or section of each pattern is determined by
the shape of the cutting knives. The preliminary cutting knives i represented in
figs 11 to 13 have for their purpose to limit the cutting line of, the fashioning tool
or cutter when working on wood cut against the grain, thereby preventing the
splitting or irregular breaking of the wood by the cutter.
The knives i are attached by mounting them on a square rod n screwthreaded at
both ends (Fig 15), and they are firmly held in position by a plate v provided with
nose v¹, washers p Figs 12 and 16 and set screws q, so as to prevent their being
thrown off. The tools are mounted with the assistance of washers or packing
plates ¹.
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. A. machine for cutting mouldings in wood and similar material, having a
frame H adapted to receive a slow up and down motion from the driving shaft C
by means of worm L, worm wheel D, crank pin E, connecting rod F, levers Y, Z, X,
racks 2, 21, 3, 3¹ and pinions 1, 11, and having a cutter shaft T adapted to be set in
motion by the pulleys R and O, substantially as described.
2 The mechanism for adjusting the cutter shaft T, comprising a slide rest U
supporting the said shaft, an adjustable bed U₁ adapted to set the shaft oblique,
and a screw spindle and crank W, for regulating the depth of cutting, substantially
as described.
3. The method of balancing the weights of H and M by means of counter
weights S or S¹, to facilitate the working of the machine, substantially as described
and shown.
4. The block-holder or frame R, R¹ baving adjustable centres for setting the
blocks or plates of raw material independently of the condition of their surface,
substantially as described and shown.
5. A block holder or frame suspended at a and adapted to receive a pendulous
motion by means of stops d, rod f¹, sector f and cam g, for removing the cutter,
shaft from the block during the return motion, substantially as described.

page_text: 6. The combination of disk s pivoted on 1 and provided with teeth 81, with
carrier K and platform and adjustable rack r, for the angular adjustment of the
piece of work, substantially as described.
7. The combination of fashioning cutters with the preliminary cutters i,
substantially as and for the purpose described.
8. The method of securing the preliminary cutters i and packing plates by
means of plate v having a nose v³, rod n, washer p and set screw 9 substantially as
described.
Toted his 19th day of Autobar 12Q1