Reversing and Feed Mechanism for Flaning machinOS.
Year: 1894

page_text: Date of Application, 12th Jan, 1894-Accepted, 12th Feb., 1895
Reversing and Feed Mechanism for Flaning machinOS.
I, WILHELM HABERSANG, Manufacturer, of No. 54, Kurfürstenstrasse,
Düsseldorf, in the German Empire, 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 is chiefly applicable to machines for planing the edges of metal
plates.
The cutter head carries two cutters or plane irons enabling it to perform
the planing operation during both its backward and its forward movement, and
is also fitted with an automatic feed permitting the machine to be set for
either vertical or horizontal planing; the arrangement being adapted to operate
instantaneously and at the same time as the driving gear of the planing machine
is reversed.
In the accompanying drawings
Fig. 1 is a vertical side elevation of a planing machine provided with reversing
and feed mechanism embodying my invention.
Fig. 2 is a transverse section of the same.
Fig. 3 is a plan of the same.
Figs. 4, 5 and 6 iliustrate details of construction on a larger scale.
The feed mechanism is enclosed in a casing a a' and chiefly comprises a rack b
the motion of which is conveyed by the intermediate wheels c, c', c³ to the ratchet
wheels d d', e e¹ in the manner hereafter described, and for the purpose of adjusting
the feed, so that it may travel a distance of one or more teeth at a time, the
screw serving to regulate the position of the corner irons g g¹ has a right-and-left
screw thread cut upon it.
When the cutter moves in one direction (to the left), the rack 6 projecting.
beyond the angle piece g, first comes into contact with the peg h, mounted on the
longitudinal reversing bar, which drives it back as far as g; and the motion of the
machine is only reversed (so that the planing may take place in the opposite
direction) during the subsequent part of the movement of the cutter head. Owing
to the displacement of the rack b, the feed wheels d d and ee¹ have in the
meantime been turned through the medium of the wheels cc¹³, so that the
pawls i, situated in the feed wheels, may cause the motion to be transmitted
either to the screw spindle , or to the shaft K, one of which serves for horizontal
and the other for vertical planing.
The rack gears into the two wheels c and c', so as to turn the same simul-
taneously. The wheel c drives directly the ratchet wheel d, and the wheel o' is
geared with the ratchet wheel through the intermediate wheel c³; consequently
the two ratchet wheels d and e turn in opposite directions, and as the
wheels d and e gear into the wheels d' and e', as shown, the latter turn also in
opposite directions.
The ratchet wheels d d¹and e e¹ are mounted loose on their respective axles,
and adapted to turn the same through the intermediary of pawls ii which are
secured to the said axles and gear into the internally toothed rims of the said
wheels (each ratchet wheel having a separate pawl). The said pawls and the teeth
of the rim are arranged in such a manner, that their axles will only turn, if the
ratchet wheels turn to the right. Now as the wheels d and e¹ turn to the right,
when the rack b moves in one direction, and the wheels d¹ and e turn to the right
ID 37

page_text: when the rack b moves in the opposite direction, the two axles will turn to the
right both during the forward and during the return motion of the rack, being
alternately propelled by different ratchet pawls. On the shaft is mounted (by
groove and feather) a bevel wheel m gearing into a bevel wheel n mounted on the
vertical screw spindle K. Consequently the latter is set in motion by the spindle !
and thereby lifts or lowers the vertical slide rest or tool carrier. The shaft
carrying the ratchet wheels d' and e' has a screw thread cut on it, as shown in
Fig. 3, and passes through a screw nut connected with the horizontally movable
slide rest which serves as a base and guide for the vertical slide rest or tool
carrier. Consequently the turning of the spindle produces the horizontal
motion of the slide rest and tool relatively to the piece of work to be planed.
The pivots of the pawls i and are continued beyond their bearings, as shown
in Fig. 6, and provided at the outer extremities with short lugs or fingers by means
of which the pawls may be disengaged from the teeth of the ratchet wheels. A
two-armed spring o, shown in Fig. 5, is arranged in such a manner, that it will
retain the pawls in either of their extreme positions, that is both when they are in
gear and when they are out of gear.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is ;-
1. Reversing and feed mechanism for a planing machine capable, during both
forward and backward motion, of automatic adjustment for either vertical or
horizontal planing; the said mechanism mainly comprising a rack (6) enclosed in
a casing (a a¹) and adapted to be displaced, by being made to impinge against
tuppets or pegs (h) projecting from the reversing rod, and to impart motion to
feed wheels (dd, e e¹), one pair of which (d, e) intermittently operates a spindle (K),
while the other pair (d² e') similarly operates a shaft or spindle (I); the distance
travelled at each intermittent movement depending upon the position of two corner
irons or angle-pieces 9 g¹ which are adjustable in relation to the rack and serve for
reversing the motion.
2. The combination of the reversing rod of a planing machine, with a rack (b)
adapted to come into periodical contact with the reversing pegs and thereby to
operate the feed mechanism, substantially as described.
Dated this 10th day of January 1894.
W. HABERSANG,
By Fairfax & Wetter,
433, Strand, London, Agents.