DE13597C - Innovations in wood planing machines - Google Patents

Description

IMPERIAL

PATENT OFFICE.

EAT ENTRY

CLASS 38: Wood products, tools and machines.

Fatentirt in the German Empire from October 3rd, 1880.

The purpose of this invention is to make an inexpensive wood planing machine which by Hand or steam power can be operated. For this purpose, the work piece is over a fixed knife (planer knife) moves.

Fig. Ι of the accompanying drawing is a End view,

Fig. 2 is a side view of a planing machine for light work.

A is a cast iron beam, in the upper end of which there is a bearing B for receiving a short horizontal shaft C.

D is an elastic roller which is attached to one end of the shaft C and receives its movement from this shaft.

E is a hand wheel mounted on the opposite end of shaft C to rotate shaft C. This wheel E can be provided with a groove to accommodate a cord for moving it.

F is a table which is supported in vertical guides by column A , so that it can be adjusted in the vertical direction by screw G. This screw goes loosely through a solid tab a on the front surface of column A and engages a threaded socket b on table F.

In order to offer the table F an elastic support, the same is held by a spiral spring c which is wound around the screw G and is held on the screw G between the tabs α and the adjustable nuts d.

The pressure of the spiral spring c is regulated by turning the nut d , so that a greater or lesser flexibility of the table can be achieved.

This table F receives the wood to be planed and supports the same during the operation. The table F is provided with transverse guides to receive the box H in which the knife J is suitably mounted.

The knife is arranged immediately below the elastic roller D , which serves to hold the wood on the table and to drive the same over the cutting surface of the knife and to effect the planing.

Since the shaft through which this roller D is carried is mounted in the fixed guide B , an adjustment of the roller, according to the different thicknesses of the wood, cannot take place; For this reason the table F can be adjusted in the vertical direction by means of the screw G.

The wood to be cut is first pushed forward by the hand until it is caught by the roller D , after which it is propelled forward by the rotation of the roller.

In order to ensure that the roller D holds the wood firmly, it is necessary that its periphery is made of elastic material.

In practice, the inventor has found that when using an elastic roller (preferably Paragum, oxidized vegetable oils, such as B. linseed oil, which by adding Fibers, etc., can be made more or less elastic, as well as vulcanized oils)

Claims (1)

moving the wood through the machine and pressing against the knife, the moving Parts can be considerably simplified, so that the use of chain or Gear train is no longer required. The roller is shown in Fig. 2a and can consist of a metal sleeve e , over which the disks f made of vulcanized rubber (e.g. approx. 17 mm thick and 17 mm wide strips) in sufficient number to make a roller of necessary Width to produce, are stretched. When planing heavy work, the inventor uses the machines shown in FIGS at. Fig. 3 is a top view, Fig. 4 is a side view of the same. In this modification, the table consists of a long frame K with rollers K ¹ , on which the wood to be processed is placed. This framework K is supported by beams L at each end so that the frame can be raised or lowered depending on the thickness of the wood to be cut. The knife box H is arranged in the middle of this framework. The roller D covered with rubber is arranged in slidable bearings above the table. These bearings are supported by supports which are attached to each side of the framework K. The necessary pressure of the roller on the wood to be cut is produced by weights M, which are held in a suitable manner. The roller D is driven by the drive m on the axis of the drive wheel E and by the gear m ¹ on the roller axis. The speed with which the roller D is driven is regulated according to the width of the wood to be planed, for which purpose the drives can be exchanged. With wood about 30 cm wide, the speed of the roller D is equal to 1: 4 revolutions of the drive wheel, with about 15 mm wood width ι: 2, while with approx. 8 cm wide wood the roller is rotated at the same speed with the drive wheel . The table is arranged in an inclined direction to allow the dead weight of the wood to move forward support the same by the roller. When planing very hard wood, it is often necessary to attack the wood in front of and behind the knife. For this purpose, the inventor uses two further elastic pressure rollers D ¹ D "' , one on each side of the roller D, as can be seen from FIG. 5. These rollers D ¹ D ² can be arranged and loaded in the same way as in FIG and 4 shown. These are driven by gears from the roller D , so that all three rollers rotate in the same direction. With this modification only one knife is used. As a result, the wood should be caught at the weakest points, i.e. where the wood comes against the cutting edge and when leaving the same, because the wood before it comes into contact with the knife from roller D ¹ when leaving the knife from roller Z> ^{3 is} detected. It is advantageous in some cases to use two knives one behind the other to plan off two chips in one operation, in which case two rubber-covered rollers D ³ Z> ^{4 are placed} one roller above each knife. Fig. 6 is a side view, Fig. 7 is a top view of this modification. The rollers Z> ³ _ £> ⁴ are arranged in the swinging frame JJ ¹ on the shaft C and driven by this shaft. -The required pressure is achieved by the weights M , which are connected to the frame JJ ¹ by the rods iV. The maximum pressure is regulated by moving the nut O ¹ on the rod O. This rod is connected to one arm of an angle lever P , the other arm of which is connected to the weight M through the eyelet P ¹ . Patenτ claim: The combination of one or more fixed knives of a planing machine with pressure and Feed rollers made of elastic material in the three illustrated embodiments. 1 sheet of drawings.