Improved Hand Tool for Planing, Dressing, or Shaping Bosses and similar Parts which cannot conveniently be Mounted in Ordinary Planing or Dressing Machines.
Year: 1896

page_text: Date of Application, 1st Feb., 1896
Complete Specification Left, 2nd Nov., 1896-Accepted, 19th Dec., 1896
PROVISIONAL SPECIFICATION.
Improved Hand Tool for Planing, Dressing, or Shaping Bosses and
similar Parts which cannot conveniently be Mounted in Ordinary
Planing or Dressing Machines.
I, EDWARD WILSON, of Commercial Road, Exeter, in the County of Devon,
Engineer, do hereby declare the nature of this invention to be as follows:-
The object of the present invention is to provide a hand tool which can be readily
clamped or attached to bosses or similar parts which cannot be conveniently mounted
in ordinary dressing or planing machines, for the purpose of dressing, planing or
shaping the surfaces of such parts.
For this purpose I employ a spindle one end of which is provided with any suitable
means for clamping or securing it to the boss or other part to be operated upon.
Upon this spindle a rod or bar with a cylindrical bore is mounted so that it can rotate
on the spindle. The outer surface of such rod or bar is polygonal (preferably squaro),
oval, or of other suitable form which will prevent the tool holder or carrier to be
presently described from rotating thereon. This tool holder is mounted on the bar or
rod so that it can slide longitudinally thereon, and at its forward end the planing
or shaping tool is mounted.
At the rear of the tool holder or carrier a worm wheel is secured to the bar or rod
on which such carrier is mounted. Behind such worm wheel an arm or bracket is
secured to the rear end of the central spindle. The lower end of such arm or bracket
forms a bearing for a spindle on which a reciprocating hand lever is loosely mounted,
such spindle carrying a worm gearing with the worm wheel on the bar or rod, and
also a ratchet wheel with which a pawl mounted on the hand lever engages.
The hand lever is connected by a link or links (preferably two-one on each side)
to a collar mounted upon the tool holder or carrier so that the latter can rotate
in relation thereto, while it reciprocates with such collar when the hand lever is
operated.
The action is as follows:-The apparatus being clamped in a suitable position to
the part which is to be operated upon, when the hand lover is operated in the forward
direction, through the link connecting it with the tool holder or carrier it causes the
tool to make the necessary cut, while the rearward movement of the hand lever
carries the tool back to the position for a new cut. During the forward movement
the pawl carried by the hand lever will slip over the teeth of the ratchet wheel, while
during its rearward movement it will cause the latter to partially rotate, and through
the worm on its spindle gearing with the worm wheel on the rear end of the bar
or rod impart a similar movement to the tool holder or carrier mounted thereon, the
collar which is connected by the link or links to the hand lever as above statel
permitting such rotary movement of the tool holder or carrier, so that the necessary
feed will be imparted to the tool for bringing it to the position for the next cut when
the hand lever is again operated in a forward direction.
As the to and fro travel of the tool holder or carrier must be comparatively long,
while the rotary movement of same for the feed would have to be comparatively
small, I mount a projection or cam surface on the spindle of the ratchet wheel, over
which the pawl carried by the hand lever is caused to travel, for a certain portion

page_text: of the length of the stroke of such hand lever, so that such pawl cannot engage
with the teeth of the ratchet wheel during this period. This cam or projection is
adjustably secured to the ratchet spindle so that its position can be varied, and thus
enable the amount of feed to be regulated.
In order to enable the feed to be effected in either direction 1 may employ a double
ended or anchor-shaped form of pawl, which can be shifted in relation to the hand
lever so as to cause either end of same to engage with the ratchet wheel.
Dated thin 1at lave of a 100%
Improved Hand Tool for Planing, Dressing, or Shaping Bosses and
similar Parts which cannot conveniently be Mounted in Ordinary
Planing or Dressing Machines.
I, EDWARD WILSON, of Commercial Road, Exeter, in the County of Devon,
Engineer, 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:-
The object of the present invention is to provide a hand tool which can be
readily-clamped or attached to bosses or similar parts which cannot be conveniently
mounted in ordinary dressing or planing machines, for the purpose of dressing,
planing or shaping the surfaces of such parts..
For this purpose I employ a spindle the end of which is provided with any suitable
means for clainping or securing it to the boss or other part to be operated upon.
Upon this spindle a rod or bar with a cylindrical bore is mounted so that it can rotate
on the spindle. The outer surface of such rod or bar is polygonal (preferably square),
oval, or of other suitable form which will prevent the tool holder or carrier to be
presently described from rotating thereon. This tool holder is mounted on the bar or
rod so that it can slide longitudinally thereon, and at its forward end the planing or
shaping tool is mounted.
At the rear of the tool holder or carrier a worm wheel is secured to the bar or rod
on which such carrier is mounted. Behind such worm wheel an arm or bracket is
secured to the rear end of the central spindle. The lower end of such arm or-bracket
forms a bearing for 'a spindle on which a reciprocating hand lever is loosely mounted,
such spindle carrying a worm gearing with the worn wheel on the bar or rod, and
also a ratchet wheel with which a pawl mounted on the hand-lever engages.
The hand lever is connected by a link or links (preferably two one on each side)
to a collar mounted upon the tool holder or carrier so that the latter can rotate in
relation, thereto, while it reciprocates with such collar when the hand lever is
operated.
But in order that my said invention may be more fully understood I will now
proceed to describe same in connection with the accompanying drawings, in
which:
Fig. 1 is a longitudinal section of an apparatus constructed in accordance with my
invention,
Fig. 2 an end elevation, and
Fig. 3 a transverse section taken partly on the line - and partly on the
line y-y of Fig. 1.
Fig. 4 is a detail sectional view showing the pawl and ratchet mechanism for
operating and regulating the feed.

page_text: The spindle A is provided at one end with suitable means such as the cones B, B',
and. hut C by which it is to be clamped to the boss or other part to be operated on.
On this, spindle A is mounted a rod or bar D having a cylindrical bore so that it can
rotate. on the spindle. The outor surface of this bar or rod D is of polygonal
(preferably square as shown), oval or other suitable form which will prevent the
tool holder or carrier E which is mounted thereon from 'rotating in relation thereto.
The tool holder or carrier E is mounted so that it can slide longitudinally on the bar
or rod D, and carries at its forward end the planing or shaping tool F to be used.
At the rear of the tool holder or carrier E a worm wheel G is secured to the bar
or rod D on which such carrier is mounted, and behind this worm wheel an arm
or bracket. H is secured to the rear end of the central spindle A. The lower end of
such arm or bracket H forms a bearing H for a spindle I on which a reciprocating
hand lever J is loosely mounted. Such spindle has keyed or otherwise secured to
it a worm K gearing with the worm wheel G on the rear end of the bar or rod D,
and also carries a ratchet wheel L with which engages a pawl M mounted at m on
the hand lever J, and acted upon by a suitable spring.
The hand lever J is connected by a link or links N (preferably two-one on
each side as shown in Figs. 2 and 3) to a collar O mounted on the tool holder or
carrier E, so that the latter can rotate in relation thereto while it reciprocates
with such collar O when the hand lever J is operated.
The action is as follows:-The apparatus being clamped in a suitable position to
the part which is to be operated upon, when the hand lover J is oporated in the
forward direction, through the link or links N connecting it with the tool holder or
carrier E it causes the tool F to make the necessary cut, while the rearward
movement of the hand lever J carries the tool back to the position for a new cut.
During the forward movement the pawl M carried by the hand lever J will slip
over the teeth of the ratchet wheel L, while during its rearward movement it will
cause the latter to partially rotate, and through the worm K on its spindle I gearing
with the worm wheel G on the rear end of the bar or rod D impart a similar
movement to the tool holder or carrier E mounted thereon, the collar which is
connected by the link or links N to the hand lever J as above stated permitting such
rotary movement of the tool holder or carrier E, so that the necessary feed will be
imparted to the tool for bringing it to the position for the next cut when the hand
lever is again operated in a forward direction."
As the to and fro travel of the tool holder or carrier E must be comparatively
long, while the rotary movement of same for the feed would have to be comparatively
small, I mount a projection or cam surface P on the boss H¹ of the bracket H in
which spindle I of the ratchet wheel L rotates, over which projection or cam surface P
the pawl M carried by the hand lever J is caused to travel for a certain portion of the
length of the stroke of such hand lever, so that such pawl cannot engage with the
teeth of the ratchet wheel during this period. This cam or projection P is adjustably
secured to the boss H' of the bracket H by means of a spring ring Qor in any other
suitable manner so that its position can be varied, and thus enable the amount of
feed to be regulated.
It will be seen that by employing a pawl M of double ended or anchor shape as
shown the feed can be effected in either direction as desired, all that it is necessary
to do if the direction of the feed is to be changed being to throw the pawl over on its
centre from one side to the other and to adjust the position of the projection P which
prevents one end of the pawl M from acting upon the teeth of the ratchet wheel L
when the hand lever J is operated.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what
I claim is :-
1. The improved hand tool for use in planing, dressing or shaping bosses and
similar parts which cannot conveniently be mounted in ordinary planing or dressing
machines, consisting in a spindle by which the tool is to be clamped or attached to

page_text: the boss or other part to be operated on, and carrying a bar or rod of square or
other suitable section on which the tool holder or carrier is mounted so that it
can reciprocate thereon, such tool holder or carrier being reciprocated to effect the
work by means of a hand lever to which it is connected by a link or links, and
suitable means being provided for causing the tool holder or carrier and the bar or
rod on which it is mounted to be revolved and so feed the tool to move it to the
position for a new cut, substantially as specified.
2. In apparatus of the kind specified in the preceding claim the method of
effecting the feed of the tool consisting in mounting a pawl on the hand lever such
pawl actuating a ratchet wheel fixed on a spindle carried in a bracket attached to the
pindle by which the apparatus is secured to the work, and so causing a worm to
actuate a worm wheel fixed on the part carrying the tool holder or carrier,
substantially as specified.
3. In the apparatus specified in Claim 1 the method of regulating or adjusting
the degree of feed by means of a projection adjustably secured on the boss of the
bracket carrying the spindle of the ratchet wheel and of such form as to prevent
the pawl from engaging with the teeth of such ratchet wheel until part of the
return stroke of the hand lever has been effected, substantially as specified.
4. The improved hand tool constructed and operating substantially as specified.
Dated this 2nd day of November 1896.
ALLISON BROS.,
Agents for the Applicant.