Dies for Use in the Manufacture of Cut Nails or Tacks.
Year: 1888

page_text: Dies for Use in the Manufacture of Cut Nails or Tacks.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
Southampton Buildings, in the County of Middlesex, 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 has for its object the construction of a machine by which to auto-
matically hold and grind the beveled faces of the dies of machines employed in the
manufacture of cut-tacks and nails, and also to groove or score the said dies.
The machine herein described as embodying this invention contains a grinding
wheel and a scoring wheel, composed of emery or other suitable material, the said
wheels being attached preferably to one and the same rotating spindle or shaft.
One of these wheels called a cup-wheel is made effective in grinding the beveled
ends of the dies while they are held in a suitable carriage, and preferably while held
in a groove in the said carriage, the bottom of the said groove or the part of the
carriage supporting the die to be ground, being properly inclined with relation to the
acting face of the cup-wheel to give to the end of the die the desired bevel, the said
carriage, during the operation of grinding or beveling the end of the dic, being
reciprocated automatically by mechanism, hereinafter described.
The scoring wheel at the opposite end of the shaft is more or less rounded at its
periphery or acting edge, according to the shape of the score or groove to be made
in the face of the die, the shape of the said score or groove depending upon the shape
desired for the body or slank of the cut tack or nail to be made.
To keep the acting edge of the scoring wheel to its established curve or shape the
machine is provided with a wheel-shaping tool composed preferably of a diamond
confined in a suitable holder mounted upon a pivoted arm or carriage, made adjustable
both vertically with relation to the axis of the wheel to be ground, and also in the are
of a circle at right angles to the axis of the said scoring wheel, the holder for the
diamond being adjustable longitudinally in the said arm or carriage, as hereinafter
described..

page_text: My said invention comprises a cup shaped grinding wheel having cooperating with
it a table to support the tool to be ground, the said table having two or more sets of
pins or projections arranged in pairs, the centres of the pins or projections of each
pair being in a line at an angle to the face of the grinding wheel according to the
bevel to be given to the end of the die, substantially as hereinafter described.
The said table is provided with grooves of varying depth to ensure the presentation
of the die to be ground to the wheel at the proper angle to determine the bevel for the
end of the die..
The said invention also comprises a carriage having a top plate to support the die to
be ground and having a stud which is engaged by a latch provided with several
notches, either of which may be made to engage the said stud according to the move-
ment to be given to the said carriage with relation to the grinding wheel, the said
latch being connected with a reciprocating slide, such construction enabling the stroke
of the carriage to be changed to enable two or more different dies to be held upon it
to be ground.
It also comprises a scoring-wheel, an adjustable arm provided with a gear, a pinion
to partially rotate the said arm, the axis of the said pinion being tangential to the
periphery of the scoring wheel, a diamond holder to hold the diamond to shape the
edge of the said wheel, and suitable adjusting devices to adjust the said diamond
holder toward and from the periphery of the wheel, substantially as hereinafter
described.
It also comprises a guide-way containing a slide, a carriage made adjustable
vertically in the said slide provided with a diamond holder supporting arm pivoted
with relation to the said carriage, and means substantially as hereinafter described to
turn the said arm and the diamond holder held by it in the are of the circle
about the periphery of the said grooving wheel to give to the wheel the desired
shape.
It also comprises a bed, a rest-plate thereon having a pin or projection, and a second
rest supported upon the rest plate, and having a pin or projection to receive against it
one side of the die to be ground, the said rest being adjustable longitudinally upon
the rest plate substantially as hereinafter described.
It also comprises a scoring wheel, a bed, a rest plate thereon having a pin or
projection to receive against it one side of the die to be scored, a rest supported upon
the rest plate and made longitudinally adjustable thereon and having a pin to receive
against it another portion of the said die to be grooved, a standard made adjustable
at right angles to the axis of rotation of the shaft carrying the said scoring
wheel.
It also comprises a bed having upon it two plates each provided with a pin or
projection, the said pins receiving against them the side of the die to be grooved,
one of the said plates having an eccentric to support the underside of the die to be
grooved or scored, the eccentric permitting the die to be tipped more or less out of
fiorizontal position.
It also comprises the combination of a bed and a rest plate thereon, with a finger
to serve as a stop for the end of the die to be grooved, substantially as hereinafter
described.
It also comprises a rotating shaft having attached to it two wheels one cup-shaped
for grinding the dies to the proper bevel the other a grooving or scoring wheel, a
reciprocating carriage co-operating with the said grinding wheel and provided with
pins or projections arranged in pairs to hold the dies while their faces are being
ground to the proper bevel, and a bed located near the said grooving wheel, the said
bed having adjustably mounted above it not only a rest plate having a pin or
projection, but also a second plate having a pin or projection against which pins the
sides of the die to be grooved may be held, the said bed being adjustable to enable
the bevel faces of the die to be scored or grooved to the desired angle as hereinafter
described.
Figure 1 represents in side elevation a machine embodying my invention.

page_text: Figure 2 is a detail view hereinafter referred to.
Figure 3 is a left hand elevation of Figure 1, the supporting stand being omitted.
Figure 3 is a partial section of Figure 3 in the dotted line -*.
Figure 4 a top or plan view of Figure 1.
Figure 5 a détail showing the relative positions of the bed-die and movable die when
in a tack cutting and heading machine.
Figure 6 a top view of Figure 5.
Figure 7 a side elevation and top view of a tack such as will be produced by dies
of the shape shown.
Figure 8 is an elevation of the carriage for holding the diamond, the way in which
the carriage slides being in section.
Figure 9 is a top and end view of the heading tool, and
Figure 10 is a section of the upper part of the carriage used next the cup wheel.
Figure 11 is a section of Figure 4 taken through the hub d in the line .r³.
Figure 12 is an underside view of the rest plate h, and
Figure 13 a top view and side elevation of the bed 36.
The frame-work A, of suitable shape to support the working parts, has a foot A³,
which as shown in Figures 1 and 2, is supported upon a stand A, the said frame-work
having as herein shown two bearings A³, which support the main rotating shaft A
having secured to it a suitable belt-pulley A driven from any usual source.
The shaft A has secured to it at one end a grinding wheel C, herein denominated a
cup-wheel it having its face recessed or cat away as in dotted lines Figure 1 leaving
only a portion of the side of the wheel as an acting surface.
The opposite end of the shaft has secured to it in manner customarily practised for
holding saws and other discs on arbours, a scoring or grooving wheel B, the periphery
of which is more or less curved or rounded according to the shape of the score or
groove, see Figures 5 and 6, to be made in the face of the die a or b, the die a being
denominated the die-bed, while the die is usually called the movable die.
Referring to Figures 5 and 6, it will be noticed that the faces of these dies are
beveled, not only in the direction of their width, but also in the direction of their
depth, each of the said dies being provided with a score or groove 37.
In practice the score or groove in each die must be of just the same size, and the
faces of the dies at each side of the score or groove must contact perfectly in order to
ensure the proper shape for the shank of the tack or nail a¹, see Figure 7, and preserve
uniformity in all the facks or nails produced.
In practice the two dies hold the shanks of the tacks or nails while a suitable header p,
see Figure 9, forms the head a² for the tack.
The foot A has secured to it by suitable bolts the feet C, see Figure 2, of a
stationary guide-way C, in which is fitted to slide not only a slide C³, but also a like
slide C, each of the said slides being dovetailed in cross-section as shown by the
slide Figure 1, and being held in position in the guide-way by a gib a', see
Figures 1 and 2..
The slide has secured to it by suitabe screws 3 a carriage D shown separately in
Figure 10, it having at its top a rest D¹, provided, as herein shown with stops 4, 5
and 6, and also with two diagonal grooves 7 and 8.
The pins 4 and 6 referred to are used in pairs, and are so set that the pins of each
pair do not occupy a position at the same distance from the end of the carriage.
The grooves 7 and 8, see Figure 10, are deeper at the outer sides of the carriage
than at the sides of the carriage next the cup-wheel.
The difference in depth of each groove enables the tool to be so held and presented
to the cup-wheel that the bevel of the tool from its upper to its lower side may be
correctly obtained.
The pins 4, 4, and the groove 7 cooperate in holding the die a when its face is to
be ground, the pins 4, 4, being so located as to ensure the proper bevel of the die from
side to side.

page_text: "
The pin 6, 6, and the groove 8 cooperate to hold the die b when its face is to be
beveled, to co-act with the beveled face of the die a.
The pins 5, 5, are made available to hold the heading tool p, when it is to be
ground, its end being square.
The foot A has also erected upon it a stand E, which has suitable bearings to
support a shaft c having a pulley c¹ which may be driven by a belt, or otherwise from
any suitable source, the shaft c having a worm c², see Figure 1, which engages with
and rotates a worm gear c³ mounted loosly upon a suitable stud c held in the said
stand.
The face of this worm-toothed gear is concaved, see dotted lines Figure 2 and full
lines Figure 11, to form part of a clutch, the other part being the beveled end of a
hub d supported loosely upon the said stud c.
This hub has a cam-groove in which enters a roller stud d², see Figure 4,
attached to the slide (and extended through slots 88 therein see Figure 2, the
rotation of the hub d causing the reciprocation of the said slide.
The slide c has pivoted upon it, at 8, see Figure 2, a latch d³, provided as herein shown
with three notches 12, 13 and 14 see Figure 2", located at different distances from its
end, either one of which may be made to engage a headed stud or pin d' attached to
the carriage D.
In Figure 2, the latch is shown as having its notch 13 engaged with the pin or
stud d', the carriage at such time being reciprocated far enough to grind the heading
tool P but if the notch 12 were in engagement with the stud d' than the reciproca-
tions of the carriage D would be so changed as to enable the die bresting against
pins 6 to be ground by the wheel C, and if the notch 14 should be made to engage
the stud, then the die a in the groove 7 and against the pins 4, might be ground.
The hub d, see Figures 2 and 4, at its rear end, is reduced in diameter and provided
with an annular groove, which is entered by pins p' or projections, see Figure 4, of a
forked arm e forming part of a lever pivoted at e', the opposite end of the said lever
having jointed to it a rod attached to a suitable treadle e³, which is normally kept
elevated by a spring e, the lever e at such times acting upon and drawing the hub d
away from the gear e thus keeping the two parts of the clutch referred to separate so
that the said gear c³ runs loose, and does not actuate the cam d, but as soon as the
operator depresses the lever or treadle e³, the cam d is made to move laterally, closing
the clutch and effecting the rotation of the cam d.
The periphery or acting edge of the scoring or grooving wheel B must be kept
uniform in order to accurately grind the groove at the ends of the dies, and to ensuro
this uniformity in the acting periphery of the said wheel, I have provided at one side
of the machine a carriage B1, see Figure 3ª of dovetailed shape, it being fitted in a
dovetailed groove in the slide B2 also made dovetailed in cross section, as shown in
Figure 8, and fitted into a guideway B³ mounted upon the framework.
The slide B has a threaded ear 15, see Figure 3, which receives a screw 16.
The carriage B' is slotted, see Figure 3, to receive a screw 17, see Figures 3 and 3",
by which to adjust the carriage vertically in the slide B².
The carriage B has a socket which receives a pin 18, see dotted lines Figure 3,
provided at its upper end with a bevel gear 19, which is also attached to the arm 20,
which at its upper end has a guide 21, in which is placed the holder 22 which holds
the diamond 23, the said holder being confined in position by a suitable pin or
screw 24.
The carriage B has a suitable bracket to receive a short shaft, see Figure 3,
provided at one end with a beveled gear 25, and at its other end with a hand wheel 26,
the beveled-gear 25 engaging the bevel gear 19 and turning the arm 20 about its
vertical pivot 18, so that the diamond 23 may travel around the periphery of the
scoring wheel B to give to it its proper curvature, the said diamond acting to keep
the periphery of the wheel in proper shape.
The guide-way B³ has in it a slide G, see Figures 2 and 3, provided with a lug 26,
which is entered by the screw 27,

page_text: The screws 16 and 27 are practically one screw, one having a right hand and the
other a left hand thread, the screw being held against longitudinal movement by
means of a loop-like bearing 28, attached to a stationary part of the frame, so that
the rotation of the said screws by the hand wheel 29 causes the slides B and G to
be moved toward or from each other at the same rate of speed.
The slide G contains in it the foot G1 of a carriage, see Figures 1 and 3, which is
made vertically adjustable by means of the slot 30 and screw 31.
The upper end of this foot G' has attached to it by a screw 32, in a slot 33, the
segmental foot G provided with a standard G³, and this standard has connected. to
it by a screw 34 the foot 35 of a bed 36.
The bed 36 has mounted upon it a segmentally shaped rest-plate h, provided at its
underside with a segmental projection 54, see Figure 3, entering a segmental groove
in the bed 36.
The rest-plate is provided at its upper side with a dove-tailed groove, see
Figure 3, to receive a dove-tailed rest ¹, which at one edge is provided with rack
teeth, shown best in Figure 4, which teeth are engaged by the teeth of a pinion h³,
on a short shaft provided at its upper end with a head or thumb-wheel, as
shown in Figure 3, the thumb-wheel being omitted in Figure 4 so as not to conceal
the pinion h².
The rest is provided with a pin 7, against which is placed one side of the die b,
the face of which is to be provided with a groove, as at 37, the rotation of the
shaft altering the position of the guide pin in order that the die may be located
properly with relation to the acting edge of the grooving or scoring wheel.
The rest-plate has erected upon it a pin h, which also serves as a guide for the
rear end of the die & being ground.
The rest-plate has at its outer side a second segmental projection 89, see
Figure 12, which enters a correspondingly shaped groove. in or cooperates with a
correspondingly shaped shoulder 90, see Figure 13, in the bed 36.
The projections 54 and 89 enables the rest plate h to be adjusted freely upon the
bed 36 about a vertical centre coincident with the centre of the curve of the periphery
of the wheel, and this rest plate / also has two lugs or ears, which receive in them a
shaft m, see Figure 3, provided with an eccentric m¹, see Figure 4, upon which rests
the underside of the tool or die & being scored or grooved, the partial rotation of the
said shaft causing the eccentric to raise or lower the outer end of the die, in order to
ensure the proper amount of difference of depth in the groove from the 'upper to the
lower side of the die.
The bed 36 near its front end, see Figure 3, has adjustably attached to it by a
screw n a finger n', which nearly touches the scoring wheel B, the said finger being
shaped to form a stop for the end of the die bat one side of the groove being made
therein, the said stop serving to determine the depth of the groove or score in the
said die.
By connecting the two slides B2 and G, the former carrying the carriage which
supports the diamond, and the latter the rest-plate and its adjusting devices, it is
possible to ensure the uniform movement of the diamond and of the stop n¹ with
relation to the acting periphery of the scoring wheel, and ensure for the periphery
of the wheel a shape suitable to make the groove in the end of the die of the
shape required for the body of the tack or or nail, the depth of the groove being
determined by the position of the finger n' and the inclination of the groove by the
bed 36 and its parts.
The grooves 7 and 8 in the top plate D' of the carriage D may be made of greater
depth than shown, so that the sides thereof may serve the purpose of the pins 4
and 6, and instead of providing the carriage with grooves varying in depth to ensure
the bevel of the end of the die from top to bottom, may mount the top plate D'
upon the upright D by a segmental foot as G' Figure 3, employed to adjust the
standard G³.
The-rest-plate and bed 36 are confined together in adjusted position by a thumb-
screw 91, see Figure 3.

page_text: Having now particularly described and ascertained the nature of the said invention,
and in what manner the same is to be performed, as communicated to me by my
foreign correspondent, I wish it understood that I claim :-
First. In a machine for grinding dies, a cup-shaped grinding wheel having
cooperating with it a table to support the tool to be ground, the said table having
two or more sets of pins or projections arranged in pairs, the centres of the pins or
projections of each pair being in a line at an angle to the face of the grinding wheel
according to the bevel to be given to the end of the die, substantially as described.
Second. In a machine for grinding dies, a cup-shaped grinding wheel having
cooperating with it a table to support the tool to be ground, the said table having
two or more sets of pins or projections arranged in pairs, the centres of the pins or
projections of each pair being in a line at an angle to the face of the grinding wheel
according to the bevel to be given to the end of the die, the said table being provided
with grooves of varying depth to thus ensure the presentation of the die to be ground
to the wheel at the proper angle to determine the bevel for the end of the die, sub-
stantially as described.
Third. In a machine for grinding dies, a carriage having a top plate to support the
die to be ground and having a stud which is engaged by a latch provided with
several notches, either of which may be made to engage the said stud according to
the movement to be given to the said carriage with relation to the grinding wheel,
the said latch being connected with a reciprocating slide, such construction enabling the
stroke of the carriage to be changed to enable two or more different dies to be held
pon it to be ground, substantially as described.
Fourth. In a machine for grinding dies, the combination of a scoring wheel, an
adjustable arm provided with a gear, a pinion to partially rotate the said arm, the
axis of the said pinion being tangential to the periphery of the scoring wheel, a
diamond-holder to hold the diamond to shape the edge of the said wheel, and suitable
adjusting devices to adjust the said diamond-holder toward and from the periphery of
the wheel, substantially as described.
Fifth. In a machine for grinding dies, the combination of a guide-way containing
slide, a carriage made adjustable vertically in the said slide provided with a
diamond holder supporting arm pivoted with relation to the said carriage, and
means substantially as described to turn the said arm and the diamond holder held
by it in the are of a circle about the periphery of the said grooving wheel to give to
the wheel the desired shape, substantially as described.
Sixth. In a machine for grinding dies the combination of a bed, a rest-plate
thereon having a pin or projection, and a second rest supported upon the rest-plate
and having a pin or projection to receive against it one side of the die to be ground,
the said rest being adjustable longitudinally upon the rest-plate, substantially as
described.
Seventh. In a machine for grinding dies, the combination of a scoring wheel, a
bed, a rest-plate thereon having a pin or projection to receive against it one side of
the die to be scored, a rest supported upon the rest-plate and made longitudinally
adjustable thereon and having a pin to receive against it another portion of the said
die to be grooved, and a standard made adjustable at right angles to the axis of
rotation of the shaft carrying the said scoring wheel, substantially as described.
Eighth. In a machine for grinding dies, a bed having upon it two plates each
provided with a pin or projection, the said pins receiving against them the side of the
lie to be grooved, one of the said plates having an eccentric to support the underside
of the die to be grooved or scored, the eccentric permitting the die to be tipped more
or less out of horizontal position, substantially as described.
Ninth. In a machine for grinding dies, a bed, and a rest-plate thereon, combined
with a finger to serve as a stop for the end of the die to be grooved, substantially
as described.
Tenth. In a machine for grinding dies, the combination of a rotating shaft having
attached to it two wheels ane cunishaned for griveling the 'ding to the neam's havi

page_text: the other a grooving or scoring wheel, a reciprocating carriage cooperating with the
said grinding wheel and provided with pins or projections arranged in pairs to hold
the dies while their faces are being ground to the proper bevel, and a bed located near
the said grooving wheel, the said bed having adjustably mounted above it not only a
rest-plate having a pin or projection, but also a second plate having a pin or projection
against which pins the sides of the die to be grooved may be held, the said bed
being adjustable to enable the bevel faces of the die to be scored or grooved to the
desired angle, substantially as described.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London,
Agents for the Applicant.