An Improved Shaping Machine.
Year: 1891

page_text: Date of Application, 28th Nov., 1891
Complete Specification Left, 29th Aug., 1892-Accepted, 8th Oct., 1892
PROVISIONAL SPECIFICATION.
An Improved Shaping Machine.
I WILLIAM WILSON HORN of the firm of Horn & Son of 151 Strand in the
County of Middlesex Patent Agent do hereby declare the nature of this invention
(a communication to me from William R. Fox of Grand Rapids in the State of
Michigan United States of America Inventor) to be as follows:-
My invention relates to an improved shaping machine, and my invention consists
in the novel construction arrangement and combination of parts hereinafter
described and set forth.
My improved machine is constructed with a suitable framing which carries a
reciprocating work table, the said work table having a housing extending over
and above the same-the work table being adjustable vertically toward or from
the overhanging housing. A ram extends longitudinally along the said housing,
the said ram having gear teeth along it, the said gear teeth being adapted to
engage with corresponding gearing supported on the main framing of the machine.
A series of dogs are held normally out of line with the shifting mechanism of the
machine and adapted to be moved into line therewith the said dogs corresponding
in position with the various lengths of strokes desired, the dogs are pivotally
supported upon a rod and are adapted to be shifted thereupon for the said purpose.
The driving and shifting mechanism of the machine are connected with a rocking
lever carrying fingers corresponding in position to the projections of the dogs and
adapted to be struck thereby, the said fingers yielding in one direction, and
operating in the other. The operating mechanism for the movable table is connected
with the driving mechanism by a friction joint, and stops are provided for limiting
the movement of the operating mechanism said stops being adjustable to and from
each other by means of a right and left handed screw threaded rod upon which
they slide. The operation of the bed is effected through the gear by means of the
driving mechanism just described, the reciprocating motion of the bed being caused
by the action of the said dogs which cause the driving belt to be shifted from the
driving on to the reversing pulley.
Dated this 28th day of November 1891.
HORN & SON,
Applicant's Agents.
COMPLETE SPECIFICATION.
An Improved Shaping Machine.
I WILLIAM WILSON HORN of the firm of Horn and Son of 151 Strand in the
County of Middlesex Patent Agent do hereby declare the nature of this invention
(a communication to me from William R. Fox of Grand Rapids in the State of
Michigan United States of America Inventor) and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement :-
My invention relates to shaping-machines, and has for its objects to provide a
construction especially adapted to resist strain and prevent springing of the ram
and tool-head; to provide for the quick and accurate adjustment of the shifting
mechanism for a short or long stroke of the ram to render the adjustment of the
feeding movement of the table ready and certain while the machine is running,
and to generally simplify the construction with a view to making the machine
effective and durable and to secure quick and easy action in adjusting the parts.
Price 8d 1

page_text: Trespont
be thrown into line with the lever connected with the shifting mechanism.
The invention also includes the mechanism for driving the feed-table and for
limiting the amount of movement of said mechanism to vary the feed.
In the drawings
Figure 1 is a side elevation of the machine.
Figure 2 is a front view.
Fig. 3 is a plain view to show particularly the belt-shifting mechanism.
Figs. 4 and 5 are detail views of the gravity dogs and the shifting-lever.
Fig. 6 is a detail of a modification:
In the drawings, the main frame A may be of ordinary form. The table B,
the vertically-movable guide-way C, and the tool-head D do not differ materially
from those well known. The ram H is guided in ways g in the housing a and the
tool-head D is supported laterally on this ram or to one side of the guide-ways,
and the housing can thus be extended out over the work table and forward of the
extreme outward position of the tool and head, so that the ram will have a positive
bearing at all times without regard to its stroke, thus preventing springing of the
ram under strain, and consequently defective work, the guide-ways being in a
vertical line thus securing stability of the ram in all positions. The ram is
driven by the gear-wheel 3 meshing with its rack 4 the said wheel being driven
from a pinion on the shaft O which is rotated from the driving shaft O by a
gear-wheel 6 on the shaft O and a pinion on the driving-shaft. The usual
pulleys efg are arranged on the driving-shaft, the intermediate pulley being fast
and the others loose upon the shaft. A bracket 7, extending from the machine-
frame, supports the belt-shifting device, which causes the rain to move back and
forth. This immediate mechanism may be of any well-known form, and in the
present case it consists of a disk 8 having eccentric slots 9 which receive studs on
the shifting levers 10. The eccentric is operated by a rock-shaft O³ to which it is
connected by a link 12, pivotally attached to each. From this mechanism it will
be seen that when the belts are on the two outside pulleys the machine is
stationary. When either of the outside belts is shifted onto the intermediate fast
pulley, the pulley rotates in either one direction or the other, according to which
the belt is shifted, and by imparting a rocking movement to the shaft 0³ the belts
are alternately shifted on the fast pulley, thus reciprocating the ram through the
gearing described. In order to accomplish this shifting automatically, a bar I is
carried by the ram, and this is filled with a series of gravity-dogs J, placed side
by side and corresponding in position to the different lengths of stroke the machine
is capable of making, as will be seen hereinafter. These dogs have pivotal
movement on the bar, and they are normally turned to hold their projections 14
elevated and inactive, the spurs 15 bearing on a rib 16 of the ram for this purpose.
When the dogs are dropped into working position, the projections depend into line
with the fingers kk. There are two sets of dogs JJ, and the projections 14 of
the dogs are arranged thereon, so that when any dog of that set is dropped
down into working position the said projection will be out of the line with the
projection 14 on the dog J of the other set, it being in a plane in rear
of the plane of the projection of the dog J', as shown in Fig. 4.
dogs of the two sets are alternately arranged on the bar I, so that the dogs of
one set are between and adjacent to the dogs of the other set. The fingers K K'
are also arranged out of line with each other, so that the finger k will
be in line with the projection of the dogs J, while the other finger ki
will be in line with the dogs J. These fingers are pivoted to a shifting
lever M and have set-screws L. by which the position of the fingers in relation to
the dogs can be adjusted. A spring. L' keeps the fingers pressed to their outward
The

page_text: limit. The spring is held in position by a pin L. The lever M is connected with
the rock-shaft O by a link m and an arm n, and it will be seen that the movement
of the ram in either direction will bring the proper dog J or J1 against the
corresponding finger k or k¹, and this will rock the lever and shift the belts to
reverse the movement of the ram. It is understood that when the arm N is in à
vertical position both belts are on the loose pulleys, and it is desirable when
adjusting the work or the tool to have the latter not in motion and generally the
ram at the back end of the stroke, so as not to interfere with the free access to the
work. This is usually accomplished on the ordinary shaper by loosening one of
the dogs, allowing the ram to recede the proper distance, and then moving the
belts onto the loose pulley, as by means of the hand-lever M¹. In Figs. 4 and 5
is shown a simple device for accomplishing this with less expenditure of time.
The finger is made of such length that when the shifting-lever is in a vertical
position the dogs will just pass over the top of the finger; but when the lever is
thrown to the left the finger will be elevated on the arc of the circle to
the point 2. (Shown in dotted lines.) The dog J (or any one that is
dropped down) when returning will strike the finger and return it to the
position shewn in Fig. 5, which will bring the ram to a state of rest. When
it is desired to give the ram reciprocating movement, the supplemental
finger (which is pivoted to by the screws 2x and is moved in and out of
the working position with the dogs by the handle y) is moved into working
position, as shown in full lines in Figs. 4 and 5, and projects far enough over the
top of the finger k', so that the dog will carry the lever M to the right of the
vertical position and reverse the motion of the ram. The supplemental finger is
held in upright position by the spring-pin 1. The same object can be attained in
other ways by adjusting the relation between the dogs and the fingers, and one
way is shown in Fig. 6, in which the dogs as a whole can be adjusted vertically, so
that the contact between the dogs and the fingers may be regulated, in order that
the contact will cease when the finger reaches a neutral position in bringing the
ram to rest or will continue past the neutral point and thus shift the belt.
this purpose the shaft I, carrying the dogs, is carried eccentrically by the
movable bearing-plates, as I* one at each end. The set-screws L serve to adjust
the fingers slightly when it is required to get a longer or shorter stroke than the
thickness of the dogs would permit, and by reason of the spring L', interposed
between the fingers, no disastrous results will follow from the dog being dropped
down on the wrong side of the finger, as the finger will simply yield to the pressure
from the dog and the spring will return the finger to its normal position. The
fingers describe the arc of a circle from the pivot of the lever M as a center and
the dog will pass from the end of the finger in case the ram does not shift its
movement quickly enough, as the end of the finger moves downwardly as it swings
along the arc end and gradually away from the dog. The series of dogs are
especially effective in machines of this character, where it is necessary to shift the
length of the stroke very often, the dogs rendering the adjustment rapid, easy, and
accurate. Each dog may be numbered to correspond with the inches of travel
which it will, permit the ram to have. The lever M may be operated by the
handle M', and in order to prevent the free rocking movement the hub of the arm
is under frictional restraint at M².
For
The mechanism for moving the table and feeding the work to the tool consists of
an arm secured to the shaft O by a friction or slipping joint Y, Fig. 3, said arm
being connected with a vertically-movable rack p³ by a pitman p. The rack
operates the intermediate pinion R, which communicates motion to the screw-
shaft R', engaging and moving the table. The usual pawl connection is made at
this point to cause the table to feed in one direction or the other by successive
actions. The table is guided in ways c.
It is the object of this part of my invention to provide such a mechanism as
will be capable of quick and accurate adjustment to vary the feeding movement
of the table while the mechanism is in operation. Heretofore it has been

page_text: customary in some machines to connect the pitman with a slotted disk by an
adjustable bolt or clamp, and in varying the feed of the table this clamp is adjusted
in the slot to or from the center of the disk, so that the stroke of the pitman is
varied and the feed movement of the table changed. While this construction
serves the purpose for large planers, where the stroke is long and there is ample
time to make the head-adjustment while the disk is stationary, it is not suitable for
a shaper in which the stroke is short, as very often the disk is in continual motion,
so that the workman is not able to make such accurate adjustment as desired
without stopping the machine. I have overcome this difficulty in a simple manner
by providing an adjustable device arranged independent of the driving mechanism,
but adapted to limit the movement thereof. In order to accomplish the result the
arm is connected to the shaft O by a friction or slipping joint, as before
described, and the movement of said arm is limited by stops p, p' one on each side
of the arm.
These stops can slide in a guideway 16 on the machine-frame, and
they are adjusted to and from the arm O by a right and left hand screw operated
by bevel-pinions 18 19. The amount of movement which the arm has determines
the feed of the table, and it will be seen that the stops permit more or less
movement, according to their adjustment, the friction or slipping joint allowing the
arm Oto stop moving after striking the stops pp. A weight is fixed to the
extension 17 of the arm O¹ to counterbalance the weight of the mechanism
connected therewith.
It will be understood that while I have described the series of dogs as combined
directly with the ram they may be used with other reciprocating parts which are
intended to shift the driving mechanism automatically.
Instead of adjusting the tool-block by the handle projecting upwardly from the
head, said handle may be arranged on the side and connect with the adjusting-
screw by the bevelled pinions wv.. (Shown in dotted lines of Fig. 2.) This
enables the head to be swung over any number of degrees without having the
handle interfere with the housing.
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. In combination, the ram, the housing extending over the work-table and
beyond the inner limit of the ram's movement to positively support the same in its
different positions, and the work-table adjustable toward and from the overhanging
housing, substantially as described.
2. In combination, the machine-frame, the work-table, the housing projecting
from the frame over the work-table, the ram extending longitudinally along said
housing, and the tool-head supported from the side of the ram, substantially as
described.
3. In combination, the work-table, the housing extending from the machine-
frame over the work-table the ram extending longitudinally along said housing,
said ram having gear-teeth along it, and the gear supported on the main frame
and engaging with said teeth, the said work-table being adjustable vertically
toward and from the overhanging housing, substantially as described.
4. In combination, the ram, with driving mechanism therefor, shifting
mechanism, and a series of dogs held normally out of line with the connections to
the shifting mechanism and arranged to be moved into line therewith, said dogs
corresponding in position to the various lengths of strokes desired, substantially as
described.
5. In combination, the ram, with the driving mechanism, and the dogs movable
into and out of line with the "connections to the shifting mechanism, substantially
as described.
6. In combination, the ram, with the driving mechanism, the shifting mechanism,
the rod I, and the dogs pivotally supported on said rod, and connections to the
shifting mechanism.

page_text: 7. In combination, the ram, with the driving mechanism, the shifting mechanism,
the connections to the shifting mechanism, and the adjustable dogs carried by the
ram and supported to have movement in vertical planes for said adjustment,
substantially as described.
8. In combination, the ram, with the driving mechanism, the shifting mechanism,
two dogs JJ with the projections arranged to be out of line with each other
when adjusted to working position, the fingers kk corresponding, respectively, in
position to the projections of the dogs J J', and the connections from the fingers to
the shifting mechanism.
9. In combination, the ram, with driving mechanism the dog, and the finger to
be struck by said dog adjustable longitudinally of the rain, substantially as
described.
10. In combination, the ram, the driving and shifting mechanism, the dogs, and
the rocking part M, carrying the fingers kk', said fingers being yielding in one
direction, substantially as described.
11. In combination, the ram, the driving mechanism and shifting mechanism,
the dogs, the rocking part M, carrying the fingers kk' and the connections to the
shifting mechanism, substantially as described.
12. In combination, the ram, with the driving mechanism, the movable table,
the operating mechanism for said table connected with the driving mechanism by
a friction-joint, and the stops pp for limiting the movement of the operating
mechanism, said stops being adjustable to and from each other.
13. In combination, the table, the friction-arm on the driving-shaft, the
stops pp one on each side of the arm, and the right and left haud screw for
adjusting said stops, substantially as described.
14. In combination, the ram, with the driving mechanism, the shifting
mechanism, the dog carried by the ram, and a finger in line with said dog to be
struck thereby at each reciprocation of the ram for moving the finger to a neutral
point in shifting the belt to the loose pulley, one of the said parts (the dog or
finger) allowing an adjustment whereby the contact between them may be
maintained after the neutral position is reached for continuing the shifting of the
belt onto the reversing-pulley, substantially as described.
15. In combination, the ram, with driving and shifting mechanism, the dog
carried by the ram, the connections to the shifting mechanism, including the
finger k, arranged to be struck by the dog and moved to neutral position and be
out of line with the dog when in said position, with the belts on the loose pulley,
and the supplemental finger adjustable into and out of line with the dogs and
carried by the finger k', substantially as described.
Dated this 28th day of August 1892.
HORN & SON,
• Applicants' Agents.