US1727383A

US1727383A - Portable electrically-driven machine for planing, grinding, drilling, milling, sawing, and other operations

Info

Publication number: US1727383A
Application number: US134030A
Authority: US
Inventors: Simonides Bruno
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-09-15
Filing date: 1926-09-07
Publication date: 1929-09-10
Anticipated expiration: 1946-09-10
Also published as: GB295348A

Description

Sept. 10, 1929. a slMONlDEs 1,727,383

PORTABLE ELECTRIGALLY DRIVEN MACHINE FOR PLANING, GRINDING, DRILLING, MILLING, SAWING, AND OTHER OPERATIONS Filed Sept. 7, 1926 [n z/enior Patented Sept. 10, 1929.

UNITED STATES BRUNO SIMONIDES, OI MANNHEIM, GERMANY.

PORTABLE ELECTBICALLY-DRIVEN MACHINE FOB PLANING, GRINDING, DRILLING,

. MILLING, SAWING, AND OTHER OPERATIONS.

Application filed September 7, 1926, Serial No.

This invention relates to a portable, driven machine for planing, grinding, drilling, milling, sawing and other operations, in which a tool carrier is driven by means of an electric motor supported by the bodyor stock of the machine. The objects of the invention are, first, to reduce the size and the weight of the machine; second, to lower the center of gravity of the machine; and third, to provide means for the properhandling of the machine in planing straight as well as curved surfaces, or 1n using the machine for milling, drilling, grinding, polishing and other like Work.

The invention is illustrated in the accompanying drawing, in which Fig. 1 is a side elevation of one form of the hand planer with parts broken away from which the electric motor is removed; Fig. 2 is a horizontal section of the hand planer casing on the line II showing the face plates only, Fig. 1; Fig. 3 is a vertical section of the hand planer with the motor in place on the line IIII, Fig. 1; Fig. 4 is atransverse section of a part of the hand planer on the line IIIIII, Fig. 1; Fig. 5 is an elevation, with parts shown in vertical section, of a modified form of the hand planer; Fig. 6 is a horizontal section of the hand planer on the line IV-IV, Fig. 5; Fig. 7 is a vertical section on the line VV, Fig. 6; and Fig. 8 is a detailed sectional plan view through a part of the casing on a larger scale.

A base plate 1 supports a housing 2 constituting a planer body and an enclosure for an electric motor. The outer end of the plate 1 is provided with a supporting standard 3 formed at its upper end with a support 4. To the housing 2 are secured a forward handle 5 and a rearward handle 6. The end of the rearward handle 6 engages in a socket or recess 7 in the support 4 and is secured to the latter by means of an adjusting screw 8. The plate 1 is provided with beveled ribs 9 and the housing 2 is provided with beveled faces secured to the sloping surface of these ribs 9 by means of nuts 10, while the forward part of the housing 2 is provided with a wedgeshaped member 11, slidably mounted in inclined ooves 12 of the housing 2. The wedge-s aped member 11 is provided with 134,030, and in Germany September 15, 1925.

screw-threaded bolt holes 13 to receive threaded adjusting pins 14 passing through sockets 1o secured to the casing 2. The adusting pins 14 are provided with shoulders 16 and their outer ends are secured to disk nuts 17. By means of these shoulders and nuts the pins 14 are held from sliding within the sockets 15. By manipulating the disk nuts 17 the pins 14 may be rotated and the wedge-shaped member 11 may be adjusted to- .ward and from the plate 1 and higher or lower than the latter.

The housing 2 is cup-shaped to form a circular chamber 18 receiving and partially enclosing the armature 19 and field 19 of an electric motor, and the housing also encloses a cutter head or cylinder 20 attached to the armature shaft 21. The housing 2 is open at the bottom to form a cutter exposing slot 22 through which cutters on the periphery of the head or cylinder 20 project for planing a surface lying beneath the slot in the rotation of said head. In this operation, the

handles

5 and 6 enable the operator to hold and guide the device and to bring its slot 22 into the desired position upon the work to be planed.

The plate 1 is provided with a lateral enlargement 23 projecting at one side of the opening 22 to form a guide and to stably support and prevent tilting of the planer under the weight of the adjacent overhanging part of the motor extending laterally beyond that side of the housing 2. The cutter head 20 is cup-shaped to comprise a fly-wheel overlapping the field casing 28 of the motor. The periphery of the head 20-is provided with a plurality of longitudinally directed and tangentially extending recesses 24. For the purpose of illustration three recesses are shown uniformly spaced in Fig. 1. These recesses are shaped to receive cutters or knives 25 which are secured in position to the head by means of screws or the like in such a manner, that the cutting edges of the knives 25 as the cutter part is rotated successively project through the opening 22 to operate on the work.

Instead of the cutter head 20, other means,

or example a on -shaped emery-wheel having a covering 0 cork or rubber or leather dressed with grinding or polishing subthreaded at 29 into a sleeve 30' which forms an integral part of the cup shaped head 20. This sleeve 30 is journaled into the bearing 29 and extends through it.. The

bearings

26 and 29 are preferably provided with antifriction balls or rollers 30 to reduce the friction. Into this extended portion of the sleeve 30, the shaft 32 of a milling wheel 32 is threaded. Instead of this milling wheel other tools, for example an emery-wheel or a bearing or grinding or polishing wheel may be secured to the shaft 21. In these cases, the knives 25 are removed from the head 20 for enabling the -latter to act solely as a fly-wheel.

The cup-shaped head 20 is provided with a central chamber 33 extending from an inner wall 34 to form a cylindrical hood open at one end for telescopically overlapping one end of the electric motor within the chamber 18 of the cup-shaped housing. This end of the electric motor projects into the chamber 33 of the housing so as to be received by the inner end of the head 20 which rotates about the inner end part of the casing 28. This end part of the casing 28 thus forms a bearing to guide the head 20 during its rotation. The wall 34 is provided with recesses to form inlets 35 for ventilating air currents to pass into the chamber 33 for the purpose of cooling the electric motor and the cutter head. The cylindrical part of the head 20 is provided with holes 36 axially directed and adapted to receive a pin 37 passing through a lug 38 of the casing 2. This pin 37 will be employed when the head 20 is to be locked when it is desired to adjust or to remove the knives from-the head or to make repairs.

In the form ofthe hand planer shown in Fig. 5, there is adjustably attached to the side walls of the casing 2 a resilient base plate 39 having a central slot 40 arranged beneath and symmetrical to the-opening 22 of the housing. The base plate 39 extends beneath the housing 2 and is provided at the ends of the slot 40 with

enlargements

41 and 42. The enlargement 41 forms an upwardly bent shoulder adapted to slide upon the margin of the nonplaned surface part of a work piece. At the sides of and near the slot 40 of the plate 39 are fixed lateral webs 43' each having therein an elongated slot 44. Screws 45 passing through the slots 44 engage in screw threaded holes arranged in the side walls of the housing 2. By this arrangement the plate 39 is adjustably connected to the housing 2.

In the walls of the casing 2 are mounted slides 56 sloping towards the top of the baseplate 39 for supporting the latter at the forward and rearward sides of the slot 40, to prevent said blade from coming in contact with the cutter head and to limit the distance between said adjustable sole blades and said cutter head. The slides 56 are approximately concentrically curved with respect to the periphery of the head 20. Each slide 56 is adjustable by means of an adjusting screw bolt 57 engaging in a nut disk 58 rotatably and non-slidably mounted in the wall of the housing 2. Each slide 56 is preferably connected by means of a hinge 59 with the screw bolt 57 to allow the movement of the slides 56 in radial and tangential directions relatively to the head 20. Stops 60 are provided on the slides for engagement with guides to limit the downward movement of the slides and prevent the same from coming in contact with the knives of the head 20.

Having thus described the invention what is claimed as new is:

1. In a portable electrically driven and hand guided machine for planing, grinding, drilling, milling, sawing and other operations, a housing having an opening in one side thereof and a cutter exposing slot in its bottom, a casing detachably secured to said side of the housing and extending partially into the housing through said opening, an electric motor partially enclosed by said casing and projecting at its inner end beyond the casing into the housing, one end of the motor shaft being journaled in the casing and the other end of the shaft being journaled in the side of the housing opposite that to which the motor is secured, a rotary cupshaped cylinder in the housing receiving the inwardly projecting end of the casing and having a wall at one side and open at its opposite side, said wall of the cylinder being fixed to the motor shaft and said open side of the cylinder embracing and rotating about the periphery of the motor casing, and cutters on said cylinder adapted to project in the rotation of the cylinder through the said cutter exposing slot.

2. In a portable electrically driven and hand guided machine for planing, grinding, drilling, milling, sawing and other opera-' tions, a housing having an opening in one side thereof and a cutter exposing slot in its bottom, a casing detachably secured to said side of the housing and extending partial] into the housing through said opening, an e ectric motor partially enclosed by said casing and tor is secure a rotary cu -shaped cylinder in the housing receivlng t e inwardly projecting end of the casing and having a wall at one side and open at its opposite side, said wall of the cylinder being fixed to the motor shaft and said open side of the cylinder embracing and rotating about the periphery of the motor casing, the said side wall of the housing and the said wall of the cylinder being provided with axially arranged air passages, and cutters on said cylinder adapted to project in the rotation of the cylinder throu h the said cutter exposing slot.

3. I n a portable electrically driven and hand guided machine for planing, grinding, drilling, millin sawing and other operations, a housing having an opening in one side thereof and a cutter exposing slot in its bottom, a casing detachably secured to said side of the housing and extending partially into the housing through said 0 ning, an electric motor partially enclose by said casing and projecting at its inner end beyond the casing into the housing, one end of the motor shaft being journaled in the casing and the other end of the shaft being journaled in the side of the housing opposite that to which the motor is secured, a rotary cup-shaped cylinder in the housing receiving the inwardly prtijecting end of the casin and havin a we at one side and open at its 0 posite side said wall of the c linder being xed to the motor shaft and said open side of the cylinder embracing and rotating about the riphery of the motor casing, cutters on said cy inder adapted to project in the rotation of the cylinder through the said cutter exposing slot, and a bracing and guiding projection at one side of the base of the housing and extending laterally beyond the same to bear upon the work and prevent tilting of the casing in that direction and regulate the depth of cut.

4. In a rtable electrically driven and hand guid machine for planing, grinding, drilling, milling, sawing and other operations, the combination of a planer housing having resilient guiding sole-blades and between the latter an openin for the projection of planing-tools, cured to one lateral face of said housing and projecting plartly into the same a cup-shaped cutter'attac ed to the shaft of t e said motor, adjusing screws operating through the walls of the said housing, and slides operable by an e ectric motor, se-

means of said adjusting screws to control the width of the said opening.

In testimony whereof I have aflixed hereunto my signature.

BRUNO SIMONIDE S.