IMPROVEMENTS IN TOOL HOLDERS FOR MACHINE TOOLS
Year: 1874

page_text: LETTERS PATENT to Henri Adrien Bonneville, of the British and
Foregin Patent Offices, 18, Rue de la Chaussée d'Antin, Paris,
France, and 6, Piccadilly, in the County of Middlesex, Patent
Agent, for the Invention of "IMPROVEMENTS IN TOOL HOLDERS FOR
MACHINE TOOLS."-A communication from Edmond Pierre Baville,
residing at Passy, France, Machinist.
COMPLETE SPECIFICATION filed by the said Henri Adrien Bonneville
at the Office of the Commissioners of Patents, with his Petition and
Declaration, on the 9th April 1874, pursuant to the 9th Section of
the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRI
ADRIEN BONNEVILLE, of the British and Foreign Patent Offices, 18,
Rue de la Chaussée d'Antin, Paris, France, and 6, Piccadilly, in the
County of Middlesex, Patent Agent, send greeting.
WHEREAS I am in possession of an Invention for "IMPROVEMENTS IN
TOOL HOLDERS FOR MACHINE TOOLS," Ccommunicated to me by Edmond Pierre

page_text: ་
Baville, a person resident at Passy, France, Machinist, and have petitioned
Her Majesty to grant unto me, my executors, administrators, and assigns,
Her Royal Letters Patent for the same, and made solemn Declaration
that it is a communication.
NOW KNOW YE, that I, the said Henri Adrien Bonneville, do hereby
declare that the following Complete Specification, under my hand and
scal, fully describes and ascertains the nature of the Invention, and the
manner in which the same is to be performed, reference being had to the
accompanying Drawings, and to the figures and letters marked thereon,
that is to say :-
-
The Invention relates to an improved system of apparatuses for holding
the working or cutting parts of machine tools, permitting the displace-
ment of the said cutting parts or tools with moveable heads and holders,
the different dispositions of which may be adapted to all classes of
machine tools, and serve as substitutes for spring planes and curved
tools of all kinds.
In every kind of iron-cutting machines, such as planing, slutting,
boring, mortising machines, planes, and lathes, the tools destined to
them are forged, bent, shaped, and worked up out of enormous cast steel
bars, according the shape the work of pieces they are designed for; once
put up on the lathes rest or planing machines rests fastened with big
bolts in order to execute the work, whether planing, turning, slutting,
mortising, they have been made up for. Every one acquainted with
iron works knows that in order to work up any piece of machine the
tools must be made, shaped, or bent for the work required, hence con-
siderable expenditures of smithwork, want of enormous cast steel bars.
Tools made in this way can never be employed to the end; on the
contrary, a half of the matter becomes useless by the construction and
the dispotion of planing or slutting machines. In such cases the loss
of steel is shown conspicuously. The aim of the Invention and its
results have been to remove and supersed all these deficiencies and
troubles by a rational system.
The differents Figures of the accompanying Drawings represent the
series of tool holders 'arranged according to the improved principle.
Fig. 1, 2, 3, show one the tool holders under several views. A
represents a piece of steel, iron, or any other suitable metal that may

page_text: .
properly be called tool holder. Fig. 1 shows the worm A' engaging:
with the moveable head A'. The moveable head A¹ is kept steady by;
the wedge A that bears right upon the journals of the worm. The
wedge receives its pressure by means of the screw A°; the tool is
fastened by the screw A³. Fig. 2 shows a pin A³ which passes through
the worm, one end of which is terminated by a square apt to receive a
socket wrench, so that it suffices to turn the wrench of the worm to
obtain a half revolution of the moveable head. By that motion any
half-circular planing can be made without changing the tool. The
pin A permits the receding motion, so that after the cut the tool rises
up in the backwards motion, and by the form V given to the tool box A²,
Fig. 3, the tool recedes on the side. The spiral spring A set on the
part of the tool box A² pushes constantly the pieces one against the
other. As is the fastening screw nut of the moveable head A¹; that
screw nut is retained by the screw A", which prevents it from screwing
in or back during the working. Fig. 3 shows the tool box A² in a
V shape on both upper and lower sides. By that shape the tool box
never takes play, and on the contrary it becomes more adjusted by its
work and wearing. Summing what it is just said it will be very easy to
recognize the real avantages of this new system, since the position of
the tool can be put into any required cut straight at 30, 35, 45, 90
degrees, and the moveable head may be firmly fastened by the wedge
that bears on the worm.
Fig. 4, 5, 6, represent another modification of the tool holder for
lathes. Fig. 4 shows a metal square rod B with a side sole B', which
allows to shut up the moveable head B² in its bed place. This sole B₁
is connected with the rod B by the screws B and B. The revolving
motion of the tool is obtained by means of the worm B, which is put in
motion from the pin B. The worm bears upon the moveable head B²
by means of the wedge B' that is fastened by the screw B³. The
movement is the same as that of the Fig. 1, 2, 3; of course that move-
able head has no receding motion. Fig. 5 shows the moveable head B²;
the V shape given to the upper axis of this moveable head allows the
tool while cutting to act on the upper part, and in the same time to bear
firmly on the lower part of the tool holder. The sole B' is firmly
connected with tool holder B. by the ring B³ that is adjusted on the
upper boss of the latter. The screw B presses upon the wedge B" which
fastens the tool. Fig. 6 shows the clamp of the rod B going into

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Fig. 7, 8, 9, show another modification of the tool holder, especial
for planing machines and planers; that modification has the double
advantage for cutting in the forward and backwards motion of the 5
planing machine, and by its being independant can be adapted to any
machine of the same kind. Fig. 7 shows the tool box C' for the forward
cutting, and the tool box C² for the backward. When the tool box C¹
is working the tool box C² recedes by means of the axis C, and two
springs C and C₁, Fig. 9, which bear the pieces one against the other. 1
After the receding motion is operated the same operation is made for the
tool box C¹ by its axis C³, and its two spiral springs C7 and C³, Fig. 9.
The screws C3 and C4 fasten the tools. Fig. 8 shows the forward tool
box C¹, and the out of the backward tool box C³, both tools being one
opposite to the other. Fig. 9 shows the plates C" and C₁; the plate C" 1
presses the spiral springs C' and Cs against the tool box C'; this plate
is fastened by the screw C. The plate C presses the springs Cº and C"
against the box C*; this plate is fastened by the screw C¹³.
Fig. 10, 11, 12, 13, show another modification of the tool holder
provided with two cutters; this peculiar contrivance is used especially a
to thread up any kind of screw on the lathes. With this process any
screw can be made twice as quick as with the ordinary way. Fig. 10
shows the longitudinal inclination or cutting angle of the tools D7
'and D. In order to make up the thread of the screw to the determined
pitch the two screws D and D' operate the tools at side according to a
the required pitch to be cut. Fig. 11 show the wedge D'. When the
tools D' and Ds must be removed one from the other in order to cut
various threads, the wedge D' is moved by its screw D². The shoulder
of that screw is made in such a manner that it oscillates in the direction
of the wedge D' when pushed by the tool D', which is pushed sideways
by the screws D³ and D', Fig. 10. The screw D³ is maintened between
the plates D and Dº; a slide D¹º, Fig. 12, is made on these plates to let
the screw D³ move from right to left. To set properly apart the tools D'
and D³ according the given pitch it suffices to screw or unscrew the
screw D², Fig. 11, which raises or lowers the wedge D¹, then to screw the
screw D' that presses the tool against the wedge D¹, whose two faces are
-cut like a file, Fig. 10, to prevent them from sliding. Fig. 13 shows the
conical shape of the tools D' and D³.

page_text: Fig. 14, 15, 16, 17, 18, show another modification of the tool holder
for slutting, boring, and mortising machines. The rod E, Fig. 14, is
bored through in its lengthway from the upper end to the place where
the spring G is set on; the lower part is terminated inside by a conical
holc. The basis of this taper is itself divided into several half-taper
holes to receive either the lug F of the moveable head F, or the lug G*
of the moveable head G. These two moveable head are fixed in their
turn in the rod E, and revolute in it according the position wanted. The
moveable head G, Fig. 14, bears its tools vertically, so that the inside
mortisings or sluttings that could not be done by the moveable head F,
Fig. 16, are done by the head G. The receding motion is made by
means of the spiral spring G* put inside the rod. E. The moveable
head G is retained by an oscillating rod Go put inside its conical part,
and kept there by a square head that prevents the oscillating rod from
turning when the pressure rod E' is screwed on; that pressure rod E¹
being screwed on the oscillating rod Gº bears upon the spring G³, and
thus may be regulated according the weight of the tool, so that when
the tool holder comes back by the friction of the tool against
the picce,
the receding motion of the tool is made by the taper which slides a
little off its bed. As soon as the tool is disengaged, the spiral spring G
bearing inside the rod E pushes the pressure rod E¹ and brings the
moveable head G in its place. To regulate the play of the moveable
head G and prevent its lug G* from sliding off its notch when back
receding it suffices to screw conveniently the screw nut E³. To remove
and change the position of the tool it suffices to uncrew slightly the
nut E, to draw the head G, and put it into another division or notch.
The tool is fastened to the moveable head by the screws G³ and G³.
Fig. 15 shows the division of half holes made in the rod E. To mortise
or slut straight faces and larger insides the moveable head F, Fig. 16, is
used, that is, put in the rod E instead of the moveable head G. The
ascending rod Fº, screwed and fastened in the tapering part of the
head F, is fixed in the rod E by means of the pressure rod E', so that to
set steady the moveable head F it suffices to fasten the screw nut E² on
the rod E. The lug or stopper F2 keeps the moveable head steady and
3 unshakable in its notches or divisions. The position of the head F is
removed in the same way as for the head G. The moveable head,
Fig. 17, bears its tool horizontally. The receding motion is made by
means of the axis -F', and the two spiral springs F and F³, Fig. 18.

page_text: The tool is fastened by the screw F³ that presses upon the wedge F³,
Fig. 16..
Fig. 19, 20, 21, show another modification of the tool holder to mortisc
and slut two sides at once. This tool holder offers great advantages to
mortise interiors of pieces, such as pillon blocks and grease boxes. The
rod H, Fig. 19, bears right in its lower part the tool box H¹. The
receding motion of the said box is imparted by means of the axis H* and
the spring H, which brings constantly the box back to its first position.
The tool box H2 is located in the sliding box H³, and recedes by means
of the axis H' and the spring H. The sliding box H³ has the front of
its upper part shaped as a fork (Fig. 20); this above part is kept
between the shoulders of the adjusting screw H*, which is screwed in
the rod H, Fig. 19; then to set apart the tool at the required distance
the screw nut H", Fig. 21, is loosened, and by means of the regulating
screw which turned in or back brings the tools in or out with the
slide H³. By this arrangement any piece may casily be mortised with
great exatness, and moreover twice as quick as with the ordinary way.
The tools are fastened by the screws H' and H³.
Fig. 22, 23, 24, 25, 26, show several views of a double tool holder
offering remarkable advantages for small planing machines and planers.
It is about of the same shape as that of the Fig. 19, 20, 21, with this
difference still, that the tools are inserted therein. Fig. 22 shows the
front side of the sliding box Is that carrics inside the tool box I'; this
sliding box goes forwards and backwards by the screw I, which is
maintened by the plate I; that plate is fixed by the screws I", I¹³, I¹.
Fig. 23 shows a side view of the sliding box I, and the tool box I¹. The
receding motion is: operated by means of the axis I° and the spring I³;
which pushes back the tool to its first position. The bolts and screw
nut 15 are used to set the sliding box after the adjusting of the tool.
Fig. 24 shows the side view of the tool box 1%, to which the receding
motion is imparted by means of the axis I' and the spring I. Fig. 25
shows the underneath view of the tool holder I, and the boxes I' and I³,
wedge-shaped on the lengthsway; these boxes are in a V. shape on the
upper and lower parts. By this arrangement more the tool works more
it fits itself, and during the receding motion the conical boxes slide off
their beds so that the tool is disengaged both on front and sideway.
Fig. 26 shows the plan view of the slides I¹ and I The slide 118 let

page_text: pass the tool I¹ over, and the slide I" is made in order of letting pass
the bolt I. The sliding box I' is put in motion by loosening the screw
nut Is, and by screwing the screw I8. The box I' works in the forward
motion, and the box I² in the backwards, so that when one of both tools
works the other rises. The tools are fastened by the screws I¹ and I",
pressing the wedges I and I
Having thus described the different arrangements, forms, and com-
binations of the improved system of holders, which it need hardly say
form a single Invention, the modifications of which are made for the
purpose of adapting the tool to different classes of work and more or less
advantageous, I claim and desire to secure by Royal Letters Patent, the
general combination and arrangement of the whole system of tool
holders and accessory parts for use in machine tools, substantially as
above described and illustrated in the accompanying Drawings.
In witness whereof, I, the said Henri Adrien Bonneville, have
hereunto set my hand and seal, this Fourth day of April, in
the year of our Lord Eighteen hundred and seventy-four..