Improvements in Lathes or Metal Working Machines.
Year: 1896

page_text: Date of Application, 18th Feb., 1896-Accepted, 18th Apr., 1896
COMPLETE SPECIFICATION.
Improvements in Lathes or Metal Working Machines.
I, REGINALD HADDAN of the Firm of Herbert Haddan & Co. of 18, Bucking-
ham Street, Strand, W.C. London, Patent Agent, do hereby declare the nature of
this invention a communication to me from abroad by James Bruce Clyne of
Cleveland, Ohio in the United States of America, Mechanical Engineer 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 improvements in lathes or metal working machines, more
especially designed for making screws, nipples used in the attachment of the
spokes of a bicycle wheel to the wheel rim, etc.; and it consists in certain features
of construction, and combination of parts, hereinafter described and pointed out in
the claims.
In the accompanying drawings,
Fig. 1 is a top plan of that portion of the machine that embraces my invention.
Fig. 2 is a front side elevation of the same.
Fig. 3 is an elevation of a portion of the machine, mostly in central vertical
longitudinal section.
Fig. 4 is a vertical section on line 4--4, Fig. 3.
Fig. 5 is a vertical section on line 5-5 Fig. 3.
Fig. 6 is a horizontal section on line 6-6, Fig. 3. Some features in Figs. 4, 5,
and 6 are not in section.
Fig. 7 is an end elevation of cam wheel O.
Fig. 8 is a side elevation of a belt shifter embodying my invention, and Fig. 9 is
an elevation in vertical section on line 9-9 Fig. 8. Portions are broken away in
Figs. 8 and 9 to reduce the size of the drawings, and to more clearly show the
construction. Figs. 8 and 9 also show the reversible work-holder or live spindle;
the pulley bearing shaft provided with a fixed pulley and two loose pulleys
arranged at the opposite sides, respectively, of the fixed pulley, and the belt
operatively engaged by the belt shifter and adapted to be shifted from the one
loose pulley over the fixed pulley to the other loose pulley, or vice versa, and the
drawings also show the intergearing between the loose pulleys and the reversible
shaft or spindle whereby the latter is rotated in the one direction or the other
according as the belt operatively engages the one or the other loose pulley.
Fig. 10 is a side elevation of the other or pin bearing end of either one of the
arms of the lower end of the belt shifting lever.
Referring to the drawings, A designates the work holder or live spindle that is
rotated in any approved manner. It is not considered necessary to show the
mechanism for rotating the work because the same forms no part of my present
invention.
B designates the tool stock that is preferably circular in cross section as shown
in Figs. 1, and 4, and is operatively mounted upon a horizontally arranged
shaft b suitably supported from the stationary frame work C of the machine, and
arranged directly opposite to the work holder. In the case illustrated the tool
stock mounted upon one end of shaft 6 has bearing in a box C' rigid with frame
work C, and the shaft, at or near its opposite end is supported as will hereinafter
appear.
The tool stock, within its tool bearing end is provided with any suitable number
of pockets B' for the reception of the tools required in the operation of the

page_text: machine. The tool stock is therefore, provided with as many pockets B₁ as there
are tools to be used for any work for which the machine is adapted. The tool
stock, in the case illustrated is provided with four tool-receiving pockets B' and
the work holder is shown bearing a piece W of metal to be bored and threaded
internally and shaped externally to form a nipple suitable for use in securing the
spoke of a bicycle wheel to the wheel rim.
I would here remark that work of the character indicated, such for instance, as
screws, nipples, etc., is made from wire or metallic rods, and the wire or rod is
automatically fed through the work holder while it is rotated with the holder.
The
In the manufacture of nipples for use in securing the spokes of bicycle wheels to
the wheel rim, three tools are required, viz., a drill for boring the screw threaded
hole in the stock of which the nipple is constructed; a tool for milling or shaping
the blank externally, and another tool for gauging the length of the nipple.
tool stock, in the case illustrated, is therefore, provided with the three. tools
indicated and hence three of the tool receiving pockets in the tool stock are
occupied whereas, the remaining tool receiving pocket is empty. The tool
receiving pockets B' and consequently the tools of the tool stock, are arranged at
suitable intervals about the axis of the tool stock. Hence the arrangement of
parts is such that the axis of the tool stock is located such a distance out of line
with the axis of the work holder that the tools of the tool stock shall be adapted
to be brought successively into engagement with the work to be operated upon.
As already indicated, four tools are required for making some kinds of work for
which the machine is designed, whereas, less than that number of tools, as for
instance, three in the case illustrated, are required in making other articles for the
manufacture of which the machine is designed. It is, therefore obvious that if for
instance the tool stock has four receiving pockets arranged equal distances apart
as in the case illustrated and only three of said pockets are occupied by tools
required to perform their functions successively the tool stock must be given a
quarter turn in bringing two of the tools into operative position and must be
rotated a half turn in order to bring the remaining tool into an operative position.
In Figs. 1, and 2 of the drawings the drill 3 of the tool stock is shown in an
operative position. The tool b¹ for gauging the work occupies the tool receiving
pocket that is located diametrically opposite the pocket occupied by the drill, and
the milling or shaping tool 62 occupies one of the tool receiving pockets between
the pockets occupied by the gange and drill. We will suppose that, in the case
illustrated, the gauge first performs its function; that the milling or shaping tool
is next called into requisition and that the drill's services are required for the last
operation upon the work. The tool stock will have been given a quarter turn
in bringing the milling or shaping tool into operation after the gauge has
performed its function, and will have been given anather quarter turn in bringing
the drill into operation after the shaping or milling tool has performed its
function, and must be given a half turn in bringing the gauge into an operative
position for the new blank to be operated upon after the drill has completed its
operation upon the piece of work. Means are therefore, provided for rotating
the tool stock intermittently and the distance required to bring the next succeeding
tool into an operative position when the tool last operating has performed its
function.
D represents the driving shaft of the machine, which shaft is arranged
horizontally and at right angles to shaft b and is located a suitable distance below
said shaft 6 and suitably supported from the stationary frame work of the machine.
Shaft D is provided with a driving pulley d to which power is applied in any
approved manner. Driving shaft D at its forward end is suitably intergeared as
at D' with a suitably supported upright shaft E that, at its upper end is suitably
intergeared as at E¹ with a sleeve G that extends through and has bearing in a
box C³ rigid with the stationary frame work of the machine and is loosely mounted
upon and affords bearing for shaft b. Sleeve G at the inner end of box C is
provided with an annular shoulder G' that engages said end of the box and prevents

page_text: outward displacement of the sleeve, and said sleeve, at any suitable point between
shoulder G¹ and its inner extremity, is provided with an annular flange or collar G
The one and relatively stationary member H of a toothed clutch is loosely mounted
upon the inner end of sleeve G a suitable distance from the inner end of flange or
5 collar G. Clutch member H is provided with an external annular flange H¹ and
a friction ring I composed of leather or any suitable material is interposed between
said flange and the opposing face of flange or collar G2 and said friction ring is
adjusted and held in the desired frictional engagement with the opposing faces of
flanges G2 and H¹ by means of any suitable number of screws J having their heads
engaging the outer sides of flange G2 and extending through said flange into
correspondingly threaded holes formed within a metallic ring K that engages the
periphery of flange H' of the clutch member and friction ring I and is flanged
internally as at K¹ to engage that side of flange H₁ that faces away from the
friction ring. The movable member of the clutch is rigidly moanted upon the
shaft in any approved manner and is adapted to be brought into operative
engagement with member H upon reciprocating the shaft in the required direction,
and it will be observed that when operative connection is established between the
two members of the clutch the tool stock will be rotated. The reciprocation of the
tool stock bearing shaft in the direction required to move the inovable clutch
member toward the relatively stationary clutch member takes place quickly after
the operation of the operating tool, and I would here remark that the stock forming
the blanks or work operated upon, is, as already indicated, advanced as required
during the aforesaid reciprocation of the tool stock.
Mechanisms for automatically advancing the work in lathes or metal working
machines are well understood by persons skilled in the art and do not need
illustration in this application.
The means or mechanism employed for effecting the aforesaid reciprocation of
the tool stock bearing shaft comprises, preferably, the following:-A sleeve L is
rigidly mounted upon shaft b at the inner end of the tool stock, which sleeve, upon
its under side, is preferably provided with a longitudinal groove or recess L' that is
engaged by the head m of a pin M extending downwardly into a boss C³ formed
upon the stationary frame work of the machine, and the engagement of the head
of said pin with the side walls of the aforesaid recess or groove prevents
circumferential displacement of the sleeve. Groove or recess I in the under side.
of sleeve L is long enough to accommodate the endwise movement of the sleeve
during the reciprocation of the tool stock bearing shaft. The tool stock prevents
collar L from moving end wise of the supporting shaft in the one direction, and a
collar N rigidly mounted upon the shaft at the other end of sleeve L prevents
endwise displacement of said sleeve in the opposite direction. Sleeve L, upon its
ear side is provided with a roller bearing stud or lug and the roller is adapted
o be engaged by cams o' suitably secured, preferably removable, to the periphery
f the cam wheel O that iz operatively mounted upon shalt P arranged a suitable
istance rearward of and parallel with shaft b and suitably supported from the
tationary frame work of the machine. Shaft P is suitably intergeared with the
riving shaft D and preferably by means of a worm wheel P¹ operatively mounted
pon the cam wheel bearing shaft, and meshing with a worm d¹ formed upon the
riving shaft. The working surfaces 02 of cams O have such trend that they will
ide the tool stock bearing shaft in the direction required to bring clutch member h
to operative engagement with the companion clutch member H and thereby
tablish operative connection between the tool stock and driving shaft, and retain
e two clutch members in operative engagement with each other until the required
actional turn has been given to the tool stock.
For instance, a half turn, as has already been observed, must be given to the tool
ock in bringing one of the three tools shown into an operative position; hence,
e cam O employed for effecting said turn of the tool stock is necessarily
nstructed somewhat differently from the remaining cams O¹ employed for

page_text: effecting a quarter turn of the tool stock. Wheel O is provided with as many
cams as there are fractional turns to be given to the tool stock during one
complete rotation of the tool stock supporting shaft. In the case illustrated,
therefore, cam wheel is provided with three cams O¹ arranged at suitable
intervals upon the periphery of said wheel.
Cam wheel O is also provided, upon its periphery, with another set of cams Q
arranged at suitable intervals circumferentially of the wheel and adapted to engage
roller and actuate the tool stock bearing shaft in the direction required to
interrupt operative engagement with the two clutch members and H, and thereby
operatively disconnect the tool stock from the driving shaft, and the trend of the
working surfaces Q¹ of cams Q is such that the tool stock shall be gradually
advanced during the operation of the tools. Wheel O has therefore, as many
cams Qas there are cams O¹ and cams Q are so arranged relative to cams O' that
a cam shall have come into operative engagement with roller as soon as the
cam O' has performed its function.
To prevent circumferential displacement or vibration of the tool stock during
the operation of the tool, means for positively locking the tool stock in the operative
position of the tool is provided, and consists preferably of an upright bolt R
provided at its upper end with a head R adapted to snugly engage longitudinal
grooves or recesses B² formed in the periphery and arranged longitudinally of the
tool stock, and a spiral spring R2 suitably confined upon bolt R, acts in the
direction to retain the bolt in its operative position. The tool stock is provided
with as many recesses or grooves B2 as there are tool receiving pockets B₁ and the
arrangement of said grooves or recesses is such that one of them is opposite the
head of the bolt in, the operative position of any one of the tools with which
the tool stock is provided. Bolt R extends downwardly through the adjacent
portion of the stationary part of the machine, and, at its lower end, is operatively
connected with the outer end of the vertically tilting lever S that is fulcrumed, at
its opposite end, as at S to a stationary member of the machine, and at any suitable
point between its fulcrum and outer end, supports an upright pin T that extends
upwardly through the adjacent portion of the stationary part of the machine, and,
at its upper end, is provided with a roller T adapted to be engaged by an
incline L formed upon the sleeve L and the trend of said incline and the arrange-
ment of parts are such that the incline shall have come into engagement with
roller T and shall have depressed pin T to actuate the engaging lever S in the
direction and to the extent required to render bolt R inoperative, immediately
before operative engagement is completed between the two clutch members h and H.
Clutch member H consists preferably of a disc provided upon its working face
with radially arranged teeth 10 arranged at suitable intervals upon said faces and
forming radially arranged notches or recesses 11 between the teeth, and the
movable clutch member h comprises preferably a pin 12 provided at one end with a
head 13 that terminates at its outer end in a tooth 14 adapted to engage the afore-
said recesses 11 in the stationary clutch member, and consequently the tooth of the
movable clutch member is arranged radially to the axis of the supporting shaft so
that said tooth when the movable clutch member is brought into operative engage-
ment with the stationary clutch member shall properly engage the opposing
radially arranged recess in said stationary member. The pin 12 has bearing in
and has limited movement end wise of a sleeve or collar 15 rigidly mounted upon
shaft b which collar is provided with a horizontally arranged hole 16 therethrough
for the reception of the pin, and a stationary pin 17 that extends thro' a slot 18
formed in and extending longitudinally of the toothed pin 12 prevents circum
ferential displacement of said pin 12. A spiral spring 19 is confined upon pin 12
between the inner end of the toothed head of the pin and a shoulder 20 formed
within said sleeve or collar near the slotted end of the pin. Slot 18 accommodates a
limited longitudinal movement of pin 12 and spring 19 enables the movable clutch
member to yieldingly engage the stationary clutch member and enables the

page_text: movable clutch member to be pushed or crowded away from and by the stationary
clutch member during the interval of interrupting operative connection between
the clutch members.
Also, by the construction herein described, the stationary clutch member is
capable of slipping upon the supporting and actuating sleeve, as required if the
complete withdrawal of bolt R from the tool stock shall not have been effected
when the movable clutch member has been brought into operative engagement with
the companion or stationary clutch member.
In the manufacture of some work, a reversal of spindle A at certain intervals of
time must be automatically effected, and for this purpose the following is provided.
(See Figs. 8, 9, and 10.) A pulley bearing shaft 21 is arranged parallel with and
between shafts A and P. 22 and 23 represent two loose pulleys supported from
shaft 21 a sufficient distance apart to accommodate the location between them of
another pulley 24 that is fixed upon the pulley bearing shaft. A driving belt 25
driven from a counter shaft overhead (not shown) engages the one or the other of
the loose pulleys, and at a suitable distance above the pulleys, is operatively engaged
by the fork 26 of the upright oscillating shifting lever 27 of the belt shifter, which
lever, at or near its lower end is fulcrumed to any suitable support, such for
instance, as a horizontally arranged pin 28 that is arranged at right angles to and a
suitable distance below the aforesaid shafts.
A spur gear 29 is operatively connected with pulley 22 and meshes with a spur
gear 30 cperatively mounted upon the reversible shaft or spindle. A spur gear 31
is operatively connected with pulley 23 and meshes with an intermediate gear 32
that is also in mesh with a spur gear 33 operatively mounted upon the reversible
shaft or spindle. It will, therefore, be observed that the reversible shaft or spindle
is rotated in the one direction or the other, according as operative engagement is
established between the driving belt and the one or the other of the pulleys 22, 23.
For automatically oscillating or shifting lever 27 so as to shift the belt from
pulley 22 to pulley 23, or vice versa, I provide as follows:-
Said lever at its lower end preferably somewhat below the axis of the lever, is
provided with two arms 34 and 35 that are arranged at right angles or approxi-
mately at right angles to the upright arm of the lever and project laterally upon
the lever's axis in opposite directions respectively. The outer end of each arm 34,
35 is provided with an upright hole 36 therethrough and within said hole 36 is
located a pin 37 that extends through the hole, and at its upper end terminates in
a head 38 that protrudes a suitable distance at the upper end of the engaging hole
and is preferably rounded on the top. A spiral spring 39 is confined upon each
pin 37 between the head of the pin and a shoulder 40 formed upon the surrounding
wall of the respective hole 36 a suitable distance from the lower end of the hole,
and said spring acts to retain the pin in its elevated or normal position. Each
pin 37 extends a suitable distance below the supporting lever arm, and has its lower
end screw threaded externally, and a nut 41 mounted upon said threaded end which
nut is adapted to engage the under side or the pin supporting arm and therefore
constitutes a stop to limit the upward movement of the pin. Each lever arm 34, 35
upon the inner side of the outer end of the arm, is provided with an inwardly
projecting lug 42 to which a vertically tilting latch 43 is pivoted at 44 the upper
end of which latch projects a suitable distance above the respective lever arm, and
the lower end of which latch in the normal locking position of the latter is adapted
to engage an incline or beveled surface 45 formed upon the head of an upright pin
or lug 46 that is rigidly secured to any stationary object such for instance, as the
surrounding frame of the machine.
Shaft P is provided with two arms 47 and 48 that are located above the outer
ends of the different arms 34 and 35 of the lever respectively.
The arrangement of parts is such that arms 47, 48 shall during their revolution,
engage and depress the pins 37 of arms 34 and 35, arm 47 being adapted during its
revolution to engage and depress the pin of arm 34 against the action of the spring
mounted upon said pin and engage and render inoperative the tilting latch adjacent

page_text: to said arm 34 and arm 48 is adapted during its revolution to engage and depress
the pin of arm 35 against the action of the spring mounted upon said pin and
engage and render inoperative the tilting latch adjacent to said arm 35, and the
arrangement of parts is, furthermore such that each of arms 47, 48 shall be adapted
to hold the respective pin depressed until the respective tilting latch has been
rendered inoperative, and thereby exert a pressure downwardly upon the respective
pin bearing arm, which pressure effects the oscillation of the belt shifting lever into
its other extreme position, as required to shift the belt from the one loose pulley to
the other loose pulley, and arms 47, 48 are located such a distance apart circum-
ferentially of their supporting shaft that the belt shifter shall be operated at the
intervals or time required. The downward movement of each arm is limited by
any suitable stop provided for the purpose, which stop consists preferably of a
stationary lug 49 that is located adjacent to the outer end of the respective arm,
and is adapted to be engaged by the lower extremity of the tilting latch borne by
said arm. when the latch has been rendered inoperative and the arm tilting
downwardly as hereinbefore indicated.
Hence, when the belt shifting lever is in either one of its extreme positions one
of the tilting latches 43 engages the respective incline 45 and the other latch
engages the respective stop 49, as shown in Fig. 8. The arrow in Fig. 9 indicates
the direction in which the shaft P is rotated, and in said figure it will be observed,
arm 48 has just effected the depression of the pin borne by the arm 35 and has
just come into engagement with, but not yet actuated the adjacent latch I which,
when rendered inoperative permits, said arm 35 to be depressed by the pressure
exerted thereon by shaft arm 48 and the resulting depression of said lever arm 35
will actuate the belt shifting lever and cause the latter to shift the belt from the
loose pulley engaged by the belt into operative engagement with the other loose
pulley.
Having now particularly described and ascertained the nature of this said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. In a machine of the variety indicated, the combination with a tool stock
bearing shaft, whose tool stock is provided with any suitable number of tools
arranged at suitable intervals about the axis of the stock, and which shaft is
capable of being slid endwise, of a suitably rotated sleeve loosely mounted upon
the shaft and provided with an annular flange or collar G2, means for preventing
endwise displacement of said sleeve, a clutch for establishing and interrupting the
operative connection between the sleeve and shaft, one member of the clutch being
supported from and operatively connected with the shaft, and the companion
clutch member being loosely mounted upon the aforesaid sleeve a suitable distance
from the aforesaid flange or collar, a friction ring interposed between said collar
or flange and the adjacent stationary clutch member, means for establishing
frictional contact between the friction ring and the opposing surfaces of the sleeve,
flange or collar and adjacent clutch member, means for actuating the tool stock
bearing shaft end wise in the direction required to effect operative engagement
between the members of the clutch, and means for sliding said shaft in the
opposite direction, the arrangement of parts being substantially as shown, for the
purpose specified.
2. In a machine of the variety indicated, the combination with the tool stock
bearing shaft whose tool stock is provided with the tools arranged at suitable
intervals about the axis of the shaft, and which shaft is adapted to be slid end wise,
of a suitably rotated sleeve loosely mounted upon the shaft and provided with an
annular Hange or collar G2, means for preventing endwise displacement of the
sleeve, a clutch for establishing and interrupting operative connection between the
sleeve and shaft, the reciprocating member of said clutch being operatively
connected with the shaft, and the relatively stationary clutch member being
loosely mounted upon the sleeve and provided with an external flange H', friction

page_text: ring interposed between opposing surfaces of said clutch flange and the sleeve
flange or collar, ring K embracing the periphery of the clutch flange and friction
ring and flanged internally to engage that surface of the clutch flange that faces
away from the friction ring, and screws J for securing said ring K to the sleeve
flange or collar and regulating the friction between the friction ring and opposing
surfaces of said collar or flange and the flange on the adjacent clutch member,
means for actuating the tool stock bearing shaft endwise in the direction required
to effect operative engagement between the two clutch members, and means for
actuating said shaft in the opposite direction all arranged and operating substantially
as shown, for the purpose specified.
3. In a machine of the variety indicated, the combination with the tool stock
bearing shaft whose tool stock is provided with tools arranged at suitable intervals
about the axis of the shaft, and which. shaft is adapted to be slid endwise, a
suitably rotated sleeve loosely mounted upon the shaft, and means for preventing
endwise displacement of the sleeve, of a clutch for establishing operative connection
between the sleeve and shaft, one of the clutch members being operatively
connected with the sleeve and being provided with recesses arranged radially to
and at suitable intervals about its axis, and the companion clutch member being
operatively connected with the shaft and comprising a pin arranged parallel with
the shaft and having a tooth adapted to engage the aforesaid recesses, a collar
or sleeve affording bearing for said pin and rigidly secured to the shaft, a spiral
spring confined upon the pin and acting to retain the toothed end of the pin in
position for operation, means for preventing circumferential displacement of the
pin, means for sliding the tool stock bearing shaft to effect operative engagement
between the clutch members, and means for actuating said shaft in the opposite
direction, the arrangement of parts being substantially as shown, for the purpose
specified.
4. In a machine of the variety indicated, the combination with a tool stock
bearing shaft, whose tool stock is provided with tools arranged at suitable
intervals about the axis of the shaft, and which shaft is adapted to be slid endwise,
driving shaft, a clutch for establishing operative connection between the driving
shaft and tool stock bearing shaft, one member of said clutch being operatively
connected with the driving shaft and the companion clutch member being
operatively connected and movable endwise with the tool stock bearing shaft, a
collar rigidly mounted upon the tool stock bearing shaft at any suitable point
between the clutch and tool stock and a roller bearing sleeve loosely mounted
upon the tool stock bearing shaft between said collar and the tool stock, and
means for preventing circumferential displacement of the sleeve, of a cam shaft
arranged parallel with the tool stock bearing shaft and operatively connected with
the driving shaft, said cam shaft being provided with a cam wheel that, upon its
peripheral surface, is provided with two sets of cams, one set whereof is adapted
to engage the roller of the aforesaid sleeve and actuate the tool stock bearing shaft
endwise in one direction and effect operative connection between the members of
the aforesaid clutch, and the other set of cams' whereof is adapted to actuate said
shaft in the opposite direction, all arranged and operating substantially as shown,
for the purpose specified.
5. In a machine of the variety indicated, the combination of the reciprocating
tool stock bearing shaft, whose tool stock is provided with tools arranged at suitable
intervals about the axis of the shaft and is provided upon its periphery with
grooves or recesses extending longitudinally of said periphery and arranged at
suitable intervals, a driving shaft, a clutch for establishing operative connection
between the driving shaft and tool stock bearing shaft, one member of said clutch:
being operatively connected with the driving shaft and the companion clutch
member being operatively connected and movable end wise with the tool stock
bearing shaft; a collar rigidly mounted upon the tool stock bearing shaft at any
suitable point between the clutch and tool stock, and a roller bearing sleeve loosely
mounted upon the tool stock bearing shaft between said collar and tool stock, and

page_text: provided with the incline L² means for preventing circumferential displacement of
the sleeve, a cam shaft arranged parallel with the tool stock bearing shaft and
operatively connected with a cam wheel that, upon its peripheral surface is provided
with two sets of cams, one set whereof is adapted to engage the roller of the afore-
said sleeve and actuate the tool stock bearing shaft en wise in one direction aul
effect operative connection between the members of the aforesaid clutch, the other
set whereof is adapted to actuate said shaft in the opposite direction, of a bolt
adapted to engage one of the aforesaid peripheral recesses or grooves in the
operative position of any one of the tools of the stock, a tilting lever operatively
connected with said bolt, and a roller bearing pin engaging said lever and adapted
to actuate the lever in the direction required to render the bolt inoperative, the
roller of said pin being adapted to be engaged by the incline of the aforesaid
sleeve, and the trend of said ineline and the arrangement of parts being substantially
as shown, for the purpose specified.
6. In a machine of the variety indicated, the combination with the shaft or
spindle A the two pulleys intergeared with said work holder or spindle in such a
manner that the work holder or spindle shall be driven in the one or the other
direction according as the one or the other of said pulleys is driven, and the
suitably actuated belt for driving said pulley, of an upright belt shifting lever
provided at its lower end with two arms projecting laterally of the lever axis in
opposite directions, respectively, a yielding member suitably supported from each
of said arms, said yielding member in its normal position, projecting a suitable
distance above the respective arm, means for locking said lever arm in its elevated
position, and means for limiting the depression of each lever arm, two suitably
actuated revolving members arranged a suitable distance apart circumferentially of
their axis and adapted to engage and depress the different aforesaid yielding
members respectively, and the respective lever arm and render inoperative the
means employed to lock the respective lever arm in its elevated position, and
the arrangement of parts being such that the pressure exerted by either one of the
revolving members upon the respective lever arm shall as soon as the arm locking
means is rendered inoperative, result in the oscillation of the, belt shifting lever
from the one to the other of its extreme positions, substantially as set forth.
7. In a machine of the variety indicated, the combination with the shaft or
spindle A the two pulleys intergeared with said work holder or spindle in such a
manner that the work holder or spindle shall be driven in the end or the other
direction according as the one or the other of said pulleys is driven, and the
suitably actuated belt for driving said pulley of an upright belt shifting lever
fulcrumed at or near its lower end, and provided at said end with two arms
projecting laterally of the lever axis in opposite directions, respectively; a yielding
member supported from each of said arms, said yielding member in its normal
position projecting above the, respective, arm a suitable distance, a tilting latch
suitably supported from each of said lever arms adjacent to the aforesaid yielding
member of the respective arm, said latch in the elevated position of the supporting
lever arm, locking said arm in said position, a stop for each lever arm for limiting
the downward movement of said arm, a suitably actuated revolving member
operative adjacent to each of the aforesaid yielding members and adjacent latch
said arm being adapted to depress said yielding member and render the arm locking
latch inoperative and exert a pressure downwardly upon the respective lever armi,
all arranged substantially as shown, for the purpose specified.
8. In a machine of the variety indicated, the combination with the shaft or
spindle A, the two pulleys intergeared with said work holder or spindle in, such a
manner that the work holder or spindle shall be driven in the one or the other
direction according as the one or the other of said pulleys is driven, the suitably
actuated belt for driving said pulley, and the upright belt shifting lever fulerumed
at or near its lower end and provided at said end with two arms 34 and 35
projecting laterally of the lever axis in opposite directions respectively, each of
said arms being provided with an upright hole 36 therethrough, of the pins 37,

page_text: springs 39, tilting latches 43, stationary inclines or beveled surfaces 40, stops
and suitably actuated revolving arms 47 and 48, all arranged and operating
substantially as shown, for the purpose specified.
19th dor of February 1896.
K. HADDAN.