Improvements in Machines for Planing Metal.
Year: 1894

page_text: Date of Application, 7th May, 1894
Complete Specification Left, 7th Feb. 1895-Accepted, 30th Mar., 1895
PROVISIONAL SPECIFICATION.
Improvements in Machines for Planing Metal.
We, WILLIAM ANDERSON, of Altrincham, Cheshire, Draughtsman, and
GEORGE RICHARDS & Co. LD., of Broadheath, Cheshire, Engineers do hereby
declare the nature of this invention to be as follows:-
Our invention relates to that class of planing machine, which has an open side,
and an overhanging arm carrying the cutting tool, which arm moves over the work,
commonly known as side planing machine.
The improvements have for their object, to make the machine more convenient
to work, and to give the attendant full control over the machine. For this purpose,
we plane a tee slot the full length of the bed; in this slot, we place two adjustable
tops we then place a sliding bar with rack teeth cut at one end on the cutting
head or saddle; this bar is actuated by means of trip levers. Gearing into the
sliding bar, by means of a pinion, we place a cross shaft; on the front end of this
cross shaft, we place a feed disc, and on the other end, we place a bevel wheel, and
from this, drive a back shaft; this back shaft has a screw thread on the end,
and works a lever connected to the strap forks. To start the machine, the cross
shaft is revolved about one eighth of a turn; this revolves the back shaft and
throws the belt on to fast pulley; the cutting head then moves until one of the
trip levers comes in contact with one of the stops; this causes the sliding bar to
revolve the cross shaft about one quarter turn in opposite direction to that when
starting the machine, and so reverses the action, and at the same time, puts on the
feed by means of the feed disc. The trip levers are arranged to fall clear of
sliding bar immediately the belts are reversed, so that if the momentum should
carry the cutting head too far, or if a belt should break, it can buffer against the
adjustable stop, a buffer spring being fixed on the head for that purpose.
The cutting head can be stopped or reversed at any part of the stroke by revolving
the cross shaft by hand.
We, WILLIAM ANDERSON, of Altrincham, Cheshire, Draughtsman, and
GEORGE RICHARDS & Co. LD., of Broadheath, Cheshire, Engineers 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 :-
Our invention relates to that class of planing machine, which has an open side,
and an overhanging arm carrying the cutting tool, which arm moves over the
work, commonly known as side planing machine.

page_text: The improvements have for their object, to make the machine more convenient
to work, and to give the attendant full control over the machine.
In the accompanying drawing, Fig. 1 represents plan, Fig. 2 elevation, and
Fig. 3 end view of bed and saddle of side planing machine. We plane a tee slot A
the full length of the bed X; in slot A we place two adjustable stops B B; we
then place a sliding bar C with rack teeth cut in it on the cutting head or
saddle Y. Bar C is actuated by trip levers D, D'. Gearing into the sliding
bar C by means of a pinion E, we place a cross shaft G; on the front end of cross
shaft G, we place a feed dise H, and on the other end, we place a bevel wheel I,
and from this, we drive the back shaft K through bevel pinion V. Back shaft K
has a screw thread L on the end, and works lever M, which is connected to the
strap forks N. On cross shaft G is handle O, for starting, reversing and stopping
machine. S and S' are loose pulleys, running in opposite directions, P is the driving
pulley. To start the machine, the cross shaft G is revolved by means of
handle O; this revolves the back shaft K about one eighth of a turn; and moves
strap fork N from pulley S to pulley P, the cutting head Y then moves until trip
lever D comes in contact with stop B; this causes the sliding bar C to revolve
the cross shaft G about one quarter turn in opposite direction to that when
starting the machine, and so reverses the action, and at the same time, puts on the
feed by means of the feed disc H. The trip levers D and D¹ are arranged, so that
when the sliding bar C, which connects the levers D and D' has moved sufficiently
to reverse the machine, the lever D clears the top of stop B when on the cutting
stroke, and the lever D is brought into position to strike the stop B' when
on the return stroke, and so the action is repeated at each stroke of the cutting
head Y. By this arrangement, the sliding bar C is at rest immediately the
machine is reversed, so that if the momentum of the pulley P should carry the
cutting head Y too far, or if a belt should break, the head Y can buffer against
the adjustable stop B if on the cutting stroke, or stop B' if on the return stroke, a
buffer spring T and T' being fixed on the head Y for that purpose.
The cutting
head Y can be stopped or reversed at any part of the stroke by revolving the cross
shaft G, by means of handle O.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what
we claim is;
1st. A sliding bar with rack teeth cut in it, stops and levers for regulating the
feed, substantially as described.
2nd. The combination of a sliding bar with rack teeth cut in it, and connected
by bevel wheel and pinion to a back shaft, and thence through screw and lever to
strap forks, for starting, reversing and stopping the machine, substantially as
described.
3rd. The combination of a tee slot in bed, stops and trip levers and buffer spring
to stop the saddle or sliding head, substantially as described.
Dated this Sixth day of February 1895.
WILLIAM ANDERSON.
P.p. GEO. RICHARDS & CO., LD.,
CHAS. R. IORNS,
Director.