NEW OR IMPROVED MACHINERY FOR SHAPING OR DRESSING WOOD AND OTHER MATERIALS
Year: 1883

page_text: LETTERS PATENT to Jasper Wetter, of Wimbledon, Surrey for an Invention
of NEW OR IMPROVED MACHINERY FOR SHAPING OR DRESSING WOOD AND
OTHER MATERIALS communicated to him from abroad by Albin Fischer and
Johanne Caroline Schmidt, persons resident at Leipzig, in the kingdom of
Saxony
COMPLETE SPECIFICATION filed by the said Jasper Wetter at the Office
of the Commissioners of Patents on the 30th August 1883.
"
JASPER WETTER, of Wimbledon, Surrey, "NEW OR IMPROVED MACHINERY FOR
SHAPING OR DRESSING WOOD AND OTHER MATERIALS communicated to me from
abroad by Albin Fischer and Johanne Caroline Schmidt, persons resident at
Leipzig, in the kingdom of Saxony,
This invention has for its object to easily and rapidly cut into various shapes a
small or large quantity of angular pièces of wood or other material, at the same
time.
In the following description reference will be had to the accompanying drawing,
Figs. 1-4, which represent a machine embodying this invention.
Between the standards A A, which are suitably connected and steadied, is a
movable frame or receptacle, hereinafter called the work-box, containing the
materials to be shaped and receiving an up and down motion, which causes it to
pass in front of the edge of the cutting tool. The special arrangement of the
driving mechanism working the apparatus is as follows. The lower part of the
frame A A carries the main shaft W on the extremities of which are mounted the
crank-discs K serving at the same time as fly-wheels. The connecting rod attached
to the pins Z of the crank discs are connected at the top with the cross beads T,
gliding up and down in the straight guides F F.
The cross heads T are connected by means of the axle D to which are attached
short connecting rods carrying the work-box so as to communicate to it the.
required up and down motion, the latter being conducted by suitable guides G, G
secured to the frame of the machine. The guides are adapted to turn on the frame
so as to enable the work-box to slide down in a direction more or less inclined to
the knife, according to the material worked on or the shape required. The cutting
or shaping tool differs according to the materials to be worked and may be
supported by a simple holder, or by a slide-rest or by a milling tool holder.

page_text: Suitable rope-pulleys may be used for actuating the milling tool, so as to allow the
same to move along the longitudinal axis of the piece worked at. The work-box
may contain materials of different sizes in small or great quantities and is for this
purpose provided with a moveable back E, which is made adjustable and adapted
to press the material by means of a mechanism composed of the hand-wheel k,
bevel wheels, shafts o and screw-spindles & with screw-nut u.
°
To work materials of different lengths and to give the work-box a greater
stability, the front side of the latter is provided with rails H, which can be shifted
and fixed as required, so as to clamp or hold materials at their enils.
For preventing a shifting of the materials by the action of the cutter, the
cover n is pressed down by a screw t; and if the box is not quite filled, packing
pieces may be used, which enable an effectual pressure of the cover.
In order that the work-box, in its return motion, that is to say, when going
upwards; may not pass too close to the cutter which might damage the materials
worked at, an appliance is provided which gives to the sliding box a slight deviation
sideways, so that in its up motion the box passes at some distance from the knife.
This is effected by the following mechanism: The vertical guides G, G, for the
work-box are guided in rails J, J, fixed to the plate or frame pivotted on the stud C,
so that a horizontal sliding motion may be effected, by means of the cams or
curved grooves N N₁, the rod d and the two levers a and b..
The bar & adapted to be moved up and down by means of a roller r, working in
the groove or cam, is connected with the joint of the two levers and effects an
alteration of the angles formed by them.
The fulcrum f of the lever a is fixed on the machine frame, while the fulcrum c
(Fig. 4.) of the lever b coincides with the fulcruin of the moveable plate or frame,
although not in the same plane, but secured to the plate G, G, which allows a
horizontal motion of the box.
By fixing the fulcrum f to the frame A A, and the fulcrum c to the horizontally
moving box-guide G, G, the box B is slightly moved horizontally in its up-motion
through the action of the rod b; this brings the box, and thereby the materials
contained therein, beyond the reach of the cutting tool.
The whole apparatus may be used for different purposes and constructed in
various dimensions, whereby the special mechanism may accordingly vary in shape
and arrangement.
CLAIMS
1. A machine for shaping or dressing angular objects comprising essentially a
work-box B, movable up and down in front of a cutting tool in the manner
described and adapted to hold and secure one or more blocks or pieces of the
material to be treated.
2. Adapting the work-box of such a machine to move periodically sideways to
prevent the piece of work from touching the cutting edge during the upmotions,
in the manner substantially as described.
3. The mechanism for shifting the work-box sideways, consisting chiefly of levers
a and b, connecting rod d'and cam or curved guide N, in combination with the
guides. G, G, and J, J and the pivot C, for permitting the necessary motion of
the work-box, substantially as described.
•
In Witness whereof, J, the said Jasper Wetter, have hereunto set my hand and
seal this 30th day of August A.D. 1883.
+ 1175NYATT