IMPROVE- MENTS IN PLANING MACHINES
Year: 1885

page_text: I, WILLIAM WILSON HULSE, of the Ordsal Tool Works, Salford, in the County
of Lancaster, Engineer, do hereby declare the nature of said invention for IMPROVE-
MENTS IN PLANING MACHINES to be as follows:-
These Improvements relate mainly to the following points numbered from 1 to 8
both inclusive:-
1. The driving and reversing gear for producing the usual reciprocating traverse
of the table.
2. An arrangement of a screw and nut through which this reciprocating traverse
is produced and of rollers for supporting and lubricating the screw.
3. The means of lubricating the slides along which the table traverses.
4. The arrangement of and means for supporting the bed and uprights.
5. The means for planing inclined surfaces.
6. Means whereby the Toolholder may be attached at any desired point along
the Toolholder slide.
7. Means whereby the cutting operation is sometimes performed by imparting
reciprocating traverse to the toolholder slide along its guides in the fiddle back,
and the cutting feed is applied by intermittent traverse either of the table or of
the tool carriage.
8. Means whereby the cutting operation is sometimes performed by imparting
reciprocating traverse to the tool carriage along the cross slide, and the cutting
feed is applied by intermittent traverse either of the toolholder slide along its
guides in the fiddle back, or of the table.
In the driving or reversing gear referred to in point 1, the driving shaft carries
2 pulleys which are free to revolve upon the shaft when not in gear with a clutch
which is mounted upon the same shaft, and which can be engaged with either
pulley, one at a time, or may be put out of gear with both of them. According to
one arrangement the clutch may be made with a double truncated cone which is
free to slide end wise upon the shaft and rotates with it; each pulley is provided
with a corresponding internal split friction ring which is secured to a corresponding
.
1171

page_text: disc keyed upon the driving shaft; by means of a corresponding lever actuated by
one part of the double truncated cone a wedge is acted upon so as to expand the
corresponding friction ring and to cause it to grip the corresponding pulley which
then rotates together with the driving shaft; a roller mounted upon a stem which
is acted upon by a spring may be made to press against one incline or the other of
the double truncated cone so as to tend to keep the cone in position when it is in
gear with one or other of the pulleys; the roller may be also arranged so as to tend
to keep the cone in position when it is out of gear with both of the pulleys.-One
of the pulleys is driven by an open belt and the other by a crossed belt, and there-
fore the driving shaft is rotated in one direction or the other according as the
clutch is in gear with one or other of the two pulleys; either plain pulleys or cone
pulleys may be used; when the latter are employed the speed of rotation of the
driving shaft in either direction can be varied according to requirement, the result
being that the speed at which the table travels during its forward movements can
be varied without modifying the speed at which it travels during its return move-
ments and vice versâ-On one end of the driving shaft is a bevel wheel gearing
into another bevel wheel, secured upon a long screw which actuates the table longi-
tudinally as hereinafter described.
In the arrangement of screw and nut &c referred to in point 2, an adjustable
tail pin dipping in oil is fitted at each end of this screw for the purpose of allowing
for expansion through heat developed in working, and of enabling the wear to be
taken up endwise and of thus limiting the amount of end play in the screw.
When the length of the screw is such as to render intermediate support between
the end bearings desirable; one or more pairs of rollers, as may be desirable, are
introduced for the purpose of affording such support; the rollers are adjustable
towards or away from the screw and dip into troughs of oil, they are rotated by
the screw (when it is in motion) which takes up a part of the oil carried round
upon the rollers and is thus continuously lubricated while it is at work. The
Ecrew gears into a nut fixed to the underside of the table and causes the table to
traverse in one direction or the other according as the clutch of the driving
apparatus is in gear with one or other of the two pulleys-When rollers as
described above are employed for affording additional support to the screw, part of
the nut on the underside of the table is cut away so as to allow the nut to pass by
the rollers without displacing them, but it is only cut away to the depth requisite
for allowing the screw to continue to rest upon the rollers (without their being
displaced) while the nut is passing by them, and therefore the continuity of the
thread of the nut is not interfered with, and the amount of bearing surface in the
nut available for resisting end pressure is the same as though no portion of it were
cut away.
In lubricating the inclined slides along which the table traverses (point 3),
cylindrical rollers are employed, each dipping into (by preference) an independent
oil trough, and each mounted upon an independent axle parallel to the inclined
surface of the slide which is to be lubricated, and at right angles to the path in
which the table traverses; the axles of the rollers rest in bearings in the corre-
sponding pil troughs, and the oil troughs are fitted into recesses in the bed in such
a manner as to prevent unnecessary waste of oil; the rollers are kept pressed up
against the slides on the underside of the table, which, when it travels, causes the
rollers to rotate and to carry up oil which becomes distributed along the inclined
surfaces.
The bed of the machine (point 4) is by preference cast with both longitudinal
and transverse box girders, and in the larger sizes of machines the bed may be
partly supported by means of transverse beams or girders placed under the bed at
the part where the uprights are attached to it; the uprights themselves may also
be made to rest upon and be attached to these transverse beams or girders.
In planing inclined surfaces (point 5), the usual reciprocating traverse may be
imparted to the table and the cutting feed may be applied by combined inter-

page_text: mittent traverse of the toolholder slide along the fiddle back (which may be
adjusted for the purpose either in a vertical or in an inclined position) and of the
tool carriage. The incline produced by the tool will be determined both by the
angular position of the fiddle slide and by the relation between the rates of
the intermittent traverses of the toolholder slide and the tool carriage. The cutting
feed traverse of the tool carriage is performed in a manner similar to that described
in the Specification of the Letters Patent No. 5664, 24 December 1881 granted to
me for improvements in mechanism for producing traverse for Cutting feeds in
machinery for cutting metals, and the Cutting feed mechanism of the Toolholder
slide is driven from the same horizontal shaft (called 23 on sheet 2 of the Drawings
accompanying the said Specification) from which the tool carriage traversing screw
is driven, through the intervention of change wheels; by means of these change
wheels the relation between the rates at which the toolholder slide and the tool
carriage traverse along their respective slides can be varied so as to suit the work
to be done.
The Toolholder (point 6) is hinged to a plate which may be secured at any
required point on the toolholder slide and at any required angle.
In performing the cutting operation by traversing the toolholder slide along its
guides in the fiddle back (point 7) a horizontal driving shaft (distinct from the
one mentioned in connection with point 1) is employed, which may be driven
through two fast pulleys (with a loose one between them); this shaft drives a
vertical one through a set of three bevel wheels, and this vertical shaft through, a
pair of bevel wheels, drives a horizontal one mounted upon the cross slide of the
machine; upon this horizontal shaft is keyed a spur wheel with which can be put
in or out of gear a movable spur wheel feather-keyed on the horizontal shaft in the
cross slide through which the vertical and angular cutting feeds are ordinarily
applied, but which in the case under consideration is used for transmitting the
reciprocating traverse to the toolholder slide. For producing the reciprocations of
the toolholder slide the vertical shaft also drives, through a worm and worm wheel,
a rotary cylinder, in the surface of which is cut a spiral groove of dovetailed or other
suitable section; in this groove are secured two adjustable stops which can be
adjusted in any desired positions respectively along the spiral groove; a bar carried
by two pivotted arms is provided with a tongue piece which is movable along it
endwise and which engages with the spiral groove; when the mechanism is in
operation, the tongue piece, is, by the rotation of the cylinder, caused to travel
along the bar until it comes in the way of one of the stops secured in the spiral
groove; the stop thereupon presses against the tongue piece and moves the pivotted
arms, which, through the intervention of suitable mechanism shift the driving belt
so as to reverse this action of the machine, the tongue piece is then caused to travel
back along the bar until it comes in the way of the other stop, whereupon this
action of the machine is reversed, and so on. The cutting feed is applied by inter-
mittent traverse either of the table or of the tool carriage according to the plane in
which the surface to be produced lies; in either case the intermittent traverse is
produced through the intervention of suitable mechanism, operated from the
reversing mechanism just described, and acting either upon the table screw or the
tool carriage screw as the case may be. The screw of the toolholder slide can be
put in or out of gear with the automatic mechanism by means of a clutch applied
to one of the wheels which drives it.
In performing the cutting operation by imparting reciprocating traverse to the
tool carriage (point 8), a movable spur wheel is feather-keyed upon the tool
carriage screw and can be put in or out of gear (for the purpose of either
producing or suspending the reciprocating traverse of the tool carriage) with the
same spur
wheel as that with which the movable spur wheel mentioned in connec-
tion with point 7, can be put in or out of gear.
The reversing gear is the same as that described in connection with point 7.

page_text: The cutting feed is applied by intermittent traverse either of the toolholder slide
along its guides in the fiddle back, or of the table, according to the plane in which
the surface to be produced lies; in either case the intermittent traverse is produced
through the intervention of suitable mechanism, operated from the reversing
mechanism described in connection with point 7, and acting, as the case may be,
either on the horizontal shaft in the cross slide through which the vertical and
angular cutting feeds are ordinarily applied, or on the table screw.
In some cases two or more tool carriages may be employed on the cross slide,
and any or all of them may be arranged as in the case of the one already
described.

page_text: imрrоvещение Щ ГИЦІиз шасце.
I, WILLIAM WILSON HULSE, of the Ordsal Tool Works Salford, in the County
of Lancaster, Engineer, do hereby declare the nature of my invention for IMPROVE-
MENTS IN PLANING MACHINES and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement:-
These Improvements relate mainly to the following Points numbered from 1 to 8
both inclusive.
1. The driving and reversing gear for producing the usual reciprocating traverse
of the table.
2. An arrangement of a screw and nut through which this reciprocating traverse
is produced, and of rollers for supporting and lubricating the screw.
3. The means for lubricating the slides along which the table traverses.
4. The arrangement of and means for supporting the bed and uprights.
5. The means for planing inclined surfaces.
6. Means whereby the toolholder may be attached at any desired point along the
toolholder slide.
7. Means whereby the cutting operation is sometimes performed by imparting
reciprocating traverse to the toolholder slide along its guides in the fiddle back,
and the cutting feed is applied by intermittent traverse either of the table or of
the tool carriage for the purpose of planing in either a vertical or in an inclined
direction.
8. Means whereby the cutting operation is sometimes performed by imparting
reciprocating traverse to the tool carriage along the cross slide, and the cutting
feed is applied by intermittent traverse either of the toolholder slide along its
guides in the fiddle back, or of the table for the purpose of planing in a transverse
direction.
In the driving and reversing gear referred to in Point 1, the driving shaft carries
two pulleys which are free to revolve upon the shaft when not in gear with a
clutch which is mounted upon the same shaft, and which can be engaged with
either pulley one at a time, or may be put out of gear with both of them.
According to one arrangement the clutch may be made with a double truncated
cone which is free to slide endwise upon the shaft and rotates with it; each pulley
is provided with a corresponding internal split friction ring which is, secured to a
corresponding disc keyed upon the driving shaft; by means of a corresponding
ever actuated by one part of the double truncated cone a wedge is acted upon so
as to expand the corresponding friction ring and to cause it to grip the corre-
sponding pulley, which then rotates together with the driving shaft, a roller
mounted upon a stem which is acted upon by a spring may be made to press
against one incline or the other of the double truncated cone so as to tend to keep
the cone in position when it is in gear with one or other of the pulleys; the roller
may also be arranged so as to tend to keep the cone in position when it is out of
gear with both of the pulleys. One of the pulleys is driven by an open belt and
the other by a crossed belt, and therefore the driving shaft is rotated in one
direction or the other according as the clutch is in gear with one or other of the

page_text: two pulleys; either plain pulleys or cone pulleys may be used; when the latter
are employed the speed of rotation of the driving shaft in either direction can be
varied according to requirement, the result being that the speed at which the table
travels during its forward movements can be varied without modifying the speed
at which it travels during its return movements and vice versâ-On one end of
the driving shaft is a bevel wheel gearing into another bevel wheel, secured upon
a long screw which actuates the table longitudinally as hereinafter described.
In the arrangement of screw and nut etc. referred to in Point 2, an adjustable
tail pin dipping in oil is fitted at each end of this screw for the purpose of allowing
for expansion through heat developed in working and of enabling the wear to be
taken up endwise and of thus limiting the amount of end play in the screw.-When
the length of the screw is such as to render intermediate support between the end
bearings desirable, one or more pairs of rollers, as may be desirable, are introduced.
for the purpose of affording such support; the rollers are adjustable towards or
away from the screw and dip into troughs of oil, they are rotated by the screw
(when it is in motion) which takes up a part of the oil carried round upon the
rollers and is thus continuously lubricated while it is at work. The screw gears
into a nut fixed to the underside of the table and causes the table to traverse in
one direction or the other according as the clutch of the driving apparatus is in
gear with one or other of the two pulleys. When rollers as described above are
employed for affording additional support to the screw, part of the nut on the under-
side of the table is cut away so as to allow the nut to pass by the rollers without
displacing them, but it is only cut away to the depth requisite for allowing the
screw to continue to rest upon the rollers (without their being displaced) while the
nut is passing by them and therefore the continuity of the thread of the nut is not
interfered with, and the amount of bearing surface in the nut available for resisting
end pressure is the same as though no portion of it were cut away.
In lubricating the inclined slides along which the table traverses (Point 3) cylin-
drical rollers are employed, each dipping (by preference) into an independent oil
trough, and each mounted upon an independent axle parellel to the inclined
surface of the slide which is to be lubricated and at right angles to the path in which
the table traverses; the axles of the rollers rest in bearings in the corresponding
oil troughs, and the oil troughs are fitted into recesses in the bed in such a manner
as to prevent unnecessary waste of oil; the rollers are kept pressed up against the
slides on the underside of the table, which when it travels, causes the rollers to
rotate and to carry up oil which becomes distributed along the inclined surfaces.
The bed of the machine (Point 4) is by preference cast with both longitudinal
and transverse box girders, and in the larger sizes of machines the bed may be
partly supported by means of transverse beams or girders placed under the bed at
the part where the uprights are attached to it; the uprights themselves may also
be made to rest upon and be attached to these transverse beams or girders.
In planing inclined surfaces (Point 5) longitudinally the usual reciprocating
traverse may be imparted to the table and the cutting feed may be applied by
combined feeding of the toolholder slide along the fiddle back (which may be
adjusted for the purpose either in a vertical or in an inclined position) and of the
tool carriage. The incline produced by the tool will be determined both by the
angular position of the fiddle slide and by the relation between the rates of
the intermittent traverses of the toolholder slide and the tool carriage. The feeding
of the tool carriage is performed in a manner similar to that described in the
Specification of the Letters Patent No. 5664-24th December 1881, granted to me for
Improvements in Mechanism for producing Traverse for Cutting Feeds in Machinery
for Cutting Metals, and the feeding of the toolholder slide is effected through the
same horizontal shaft (called 23 on Sheet 2 of the drawings accompanying the
said Specification) from which the tool carriage traversing screw is driven, through
the intervention of change wheels; by means of these change wheels the relation 5
between the rates at which the toolholder slide and the tool carriage traverse along
their respective slides can be varied so as to suit the work to be done.

page_text: The toolholder (Point 6) is hinged to a plate which may be secured at any
required point on the toolholder slide and at any required angle.
In performing the cutting operation by traversing the toolholder slide along its
guides in the fiddle back (Point 7) a horizontal driving shaft (distinct from the one
mentioned in connection with Point 1) is employed, which may be driven through
two fast pulleys (with a loose one between them); this shaft drives a vertical one
through a set of three bevel wheels, and this vertical shaft through a pair of bevel
wheels, drives a horizontal one mounted upon the cross slide of the machine; upon
this horizontal shaft is keyed a spur wheel, with which can be put in or out of gear
a movable spur wheel feather-keyed on the horizontal shaft in the cross slide
through which the vertical and angular cutting feeds are ordinarily applied, but
which in the case under consideration is used for transmitting the reciprocating
traverse to the toolholder slide.-For producing the reciprocations of the toolholder
slide, the vertical shaft. also drives, through a worm and worm wheel, a rotatory
cylinder, in the surface of which is cut a spiral groove of dovetailed or other
suitable section, in this groove are secured two adjustable stops which can be
adjusted in any desired positions respectively along the spiral groove; a bar carried
by two pivotted arms is provided with a tongue piece which is movable along it
end wise and which enters into the spiral groove; when the mechanism is in
operation, the tongue piece, is, by the rotation of the cylinder, caused to travel
along the bar until it comes in the way of one of the stops secured in the spiral
groove; the stop thereupon presses against the tongue piece and moves the pivotted
arms, which through the intervention of suitable mechanism shift the driving belt
so as to reverse this action of the machine; the tongue piece is then caused to
travel back along the bar until it comes in the way of the other stop, whereupon
this action of the machine is reversed, and so on.-The cutting feed is applied by
intermittent traverse either of the table or of the tool carriage according to the
plane in which the surface to be produced lies; in either case the intermittent
traverse is produced through the intervention of suitable mechanism, operated from
the reversing mechanism just described and acting either upon the table screw or
the tool carriage screw, as the case may be.-The screw of the toolholder slide can
be put in or out of gear with the automatic mechanism by means of a clutch applied
to one of the wheels which drives it.
In performing the cutting operation by imparting reciprocating traverse to the
tool carriage (Point 8), a movable spur wheel is feather-keyed upon the tool carriage
screw and can be put in or out of gear (for the purpose of either producing or sus-
pending the reciprocating traverse of the tool carriage) with the same spur wheel
as that with which the movable spur wheel mentioned in connection with Point 7
can be put in or out of gear. The reversing gear is the same as that described in
connection with Point 7. The cutting feed is applied by intermittent traverse
either of the toolholder slide, along its guides in the fiddle back, or of the table,
according to the plane in which the surface to be produced lies; in either case the
intermittent traverse is produced through the intervention of suitable mechanism,
operated from the reversing mechanism described in connection with Point 7, and
acting, as the case may be, either on the horizontal shaft in the cross slide through
which the vertical and angular cutting feeds are ordinarily applied, or on the
table screw.
In some cases two or more tool carriages may be employed on the cross slide, and
any or all of them may be arranged as in the case of the one already described.
In the accompanying sheet of drawings Fig. A is a plan view, Fig. B a front
elevation, and Figs. C and D two side elevations representing a Planing Machine
constructed in accordance with the present improvements. Fig. E is an enlarged
view of the driving apparatus for imparting reciprocating traverse to the table.
Fig. F an enlarged view of the arrangement of the screw and nut for driving the
table, and Figs. G and H are enlarged views of the arrangement of rollers for
lubricating the slides of the table.-1 is the bed of the machine 2. 2' are the
uprights, 3 is the table-4 the cross slide and 5, 5¹ are two tool carriages.-6 is the

page_text: driving shaft carrying the two loose cone driving pulleys, 7. 7¹ which can be made
to drive the shaft alternately by means of a clutch arrangement. In this arrange-
ment 8 is the double truncated cone free to slide endwise on the shaft.-9. 91 are
the internal split rings,-10, 10¹ the discs (keyed on the shaft) to which the split
rings are secured, and 11, 11' the levers which expand the split rings by means of
corresponding wedges and thus cause them to grip the driving pulleys 7.7. When
the machine is at work, the levers are actuated alternately by the two ends respec-
tively of the double truncated cone, so as to cause first one driving pulley and
then the other to drive the shaft 6. The driving pulleys are driven by open and
crossed belts respectively and their alternate action on the shaft therefore causes it
to be rotated in alternate directions. The double truncated cone is operated by
a fork 54 on a sliding bar 55 which is actuated by means of adjustable stops
on the table 3 through mechanism as shown in Fig. A.-12 is the roller mounted
on the stem 13. and pressed upwards against the double truncated cone by a
spiral spring as shown, and acting upon it so as to tend to maintain its position
either in gear with one or other of the driving pulleys or out of gear with both of
them. In some cases the same result is attained by arranging the roller 12. so as to
act against the sliding bar 55 (which is then suitably formed for the purpose)
instead of against the double truncated cone.-14 is the bevel wheel on one end of
the driving shaft, gearing into another bevel wheel 15 on the screw 16 which drives
the table 3-17, 171 are the tail pins (adjustable by means of nuts as shown) at
either end of the screw and their bearing ends are immersed in oil held in recep-
tacles formed in the bed.-18. 181 and 19, 19¹ are two pairs of rollers which serve
both to support and to lubricate the screw 16; they are carried in oil troughs as
shewn, bolted to the transverse girders of the bed, and are adjustable towards or
away from the screw by means of vertical set screws as shown; acting upon the
oil troughs; the rollers are partly immersed in the oil in the troughs and when
rotated by the action of the screw they carry oil up to it continuously.—20 is the
nut (fixed to the underside of the table) in and through which the screw 16 works.
Part of the outer shell of this nut is cut away as shown in Fig. F, and as
previously described, to allow it to pass by the rollers 18. 18-19. 19¹ without
coming in collision with them. 21. 21¹ is one pair of the rollers (of which there
are six pairs in all shown in Fig. A) for lubricating the inclined slides along which
the table traverses. The rollers are of cylindrical form; each is mounted upon an
independent axle parallel with the inclined surface to be lubricated, and is partly
immersed in oil contained in a corresponding trough, fitted into a recess in the bed
as shown; they are kept pressed up against the table slides by means of spiral
springs fitted in the troughs as shown in Figs. G and H, and acting on the bearings
of the roller axles. The troughs are formed with flanges which joint against the
bed, and prevent the oil from running to waste from the recesses into which
the troughs are fitted. The bed 1 of the machine, is, as shown, cast with both
longitudinal and transverse box girders, and both it and the uprights 2. 21 are
partly supported by the two transverse girders 22. 221 placed under and bolted to
them. 24 is the toolholder slide of the tool carriage 5 (the tool carriage 5' is
shown with its tool holder slide removed) and 25. 251 are the fiddle backs of the
two tool carriages respectively. 23 (Fig. D) is a horizontal shaft which corresponds
with the one also called 23 on sheet 2 of the drawings accompanying the specifi-
cation above referred to though the shaft is situated at a different side of the
machine in each case. In the present invention this shaft transmits "feed" traverse
to the tool carriages in a manner similar to that described in the said specification,
and it also (either alternatively or simultaneously) transmits "feed" traverse to
the toolholder slides. For this latter purpose it is fitted with a wheel 56 gearing
into a wheel 57 mounted on a feather key in a short shaft, on which is also secured
a change wheel 58; 27 is a swing frame which pivots on an axis coincident with
that of the wheels 57. 58; the change wheel 58 gears into a change wheel 59
mounted on the swing frame 27 and the change wheel 59 gears into a change
wheel 60 mounted on a fixed stud; on the same stud (and connected with 60) is

page_text: another wheel 61, gearing into a wheel 62 secured on the shaft 29a from which
"feed" traverse is communicated to the toolholder slides in the usual manner.
The wheel 57 can be put in or out of gear with the wheel 56 according as it is
or is not required to impart automatic "feed" traverse to the toolholder slides by
the mechanism above described.
When the shaft 23 is employed for transmitting "feed" traverse to the tool
carriages and toolholder slides simultaneously along their respective guides, the
resulting path described by the point of the cutting tool is an inclined line, whose
angle of inclination can be varied as required by means of the change wheels
already described.
This arrangement is specially adapted for planing longitudinal surfaces, inclined
in cross section, when the angle of inclination with the horizontal line is so small
that the ordinary method of merely swivelling the toolholder slide and imparting
"feed" traverse to it and not to the tool carriage, is either inapplicable or
inconvenient.
28 is the toolholder comprising a plate which is bolted to the toolholder slide,
a binge block bolted to this plate and a clapper hinged to this block as shown. It
can be fixed at any required point along the toolholder slide 24 by means of
T grooves formed in the latter and the hinge block can be set at any required
angle by means of circular grooves formed in the plate to which it is bolted. 29 is
the horizontal driving shaft employed when performing the cutting operation. by
traversing either the toolholder along its guides in the fiddle back, or one or both
of the tool carriages along the cross slide. 30. 31¹ are the two fast pulleys on this
shaft, and 31 the loose pulley between them. 32 is the vertical shaft driven by 29
through a set of 3 bevel wheels as shown. On the cross slide is a short horizontal
shaft (not clearly shown in the drawings) driven from shaft 32 through a pair of
bevel wheels, one of which slides on shaft 32 when the cross slide is moved either
up or down.-33 is the spur wheel keyed upon this short horizontal shaft.—34 is a
spur wheel on shaft 29a which can be put in gear with the spur wheel 33 for
performing the cutting operation by traversing either of the toolholder slides, and
35. 35¹ are spur wheels on the screws 26. 26¹ respectively which can be put in gear
with the spur wheel 34 either separately or both together for performing the
cutting operation by traversing one or both of the tool carriages 5. 51 as the
case may be. 36 is the spirally grooved cylinder (in the reversing and feeding
mechanism) driven from the shaft 32, through the worm 37 and worm wheel 38;
39, 39¹ are the two pivotted arms, 42 the bar carried by them, and 41 the tongue
piece which enters into the spiral groove (which is of dove tailed form for holding
the stops) of the cylinder, and is movable endwise along the bar.-43 is a balance
weight which returns the pivotted arms and the bar to their normal position after
they have been moved by either of the adjustable stops 40. 40' coming in contact
with the tongue piece 41.-44 is a forked lever keyed upon a horizontal shaft 45,
which is oscillated in alternate directions by a lever on the pivotted arm 39¹ acting
alternately upon the two arms of the forked lever 44, according as the pivotted
arm is pressed upwards or downwards by the adjustable stops 40. 40-46 is an
upright oscillating shaft, driven by shaft 45 through bevel wheels as shown. At
the top of shaft 46 is keyed a lever which when the shaft is oscillated in either
direction moves a belt shifting bar through a connecting rod as shown in Fig. C,
and shifts the driving belt from one pulley to another-On the shaft 46 is a
bevel wheel 47, (Fig. C.) on which it is free to slide up and down when the cross
slide is raised or lowered and which oscillates a short horizontal shaft mounted in
the cross slide as shown in Fig. C.-This short horizontal shaft is provided with
a lever which imparts a feed motion either to the shaft 29ª or to either or both of
the traversing screws 26. 26¹ as may be required, through ratchet and pawl
mechanism of the ordinary kind. The shaft 45 also communicates intermittent
feed motion to the screw 16, when required, through bevel wheels 48. 48¹ (driven
as shown in Figs. A and C from shaft 46) shaft 49, lever 50 and connecting rod 51,
actuating a ratchet wheel 52 on the driving shaft 6, through rachet mechanism of

page_text: the usual kind. 53 (Fig. B) is the clutch by which the traversing screw of the
toolholder slide in tool carriage 51, is put in or out of gear with the automatic
mechanism; and a similar clutch is provided in connection with the traversing
screw of the toolholder slide 24. At all times when the driving shaft 29 is being
driven by the pulleys 30. 30¹ the driving pulleys 7. 7' are kept out of gear, and
vice versa.
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, in a Planing Machine :-
1. The arrangement of driving and reversing mechanism for producing the usual
reciprocating traverse of the table substantially as shown and described.
2. The combination of the screw 16, adjustable supporting and lubricating
rollers 18. 18¹ 19. 191 and nut 20, partly cut away to clear the rollers, substantially
as shown and described.
3. The combination of the screw 16, adjustable tail pins 17. 171 partly immersed
in oil, adjustable supporting and lubricating rollers 18. 18¹, 19. 191 and nut 20,
partly cut away to clear the rollers, substantially as shown and described.
4. The arrangement of rollers for lubricating the slides along which the table
traverses, substantially as shown and described.
5. The arrangement for enabling the toolholder to be fixed at any point along
the toolholder slide, substantially as shown and described.
6. The arrangement of the driving, reversing and feeding apparatus for planing
in a vertical or in an inclined direction, substantially as shown and described.
7. The arrangement of the driving, reversing and feeding apparatus, for planing
in a transverse direction, substantially as shown and described.
8. The general arrangement shown and described.