GB2433463A

GB2433463A - Handle for hand tool machine

Info

Publication number: GB2433463A
Application number: GB0625405A
Authority: GB
Inventors: Steffen Wuensch; Wolfgang Hirschburger; Steffen Tiede
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2005-12-23
Filing date: 2006-12-20
Publication date: 2007-06-27
Anticipated expiration: 2026-12-20
Also published as: CN1986168A; GB0625405D0; GB2433463B; DE102005061869A1; CN1986168B

Abstract

The hand tool machine has a handle region 20 with a gripping region 22. The gripping region 22 comprises a set of deformable raised portions 26. The raised portions 26 may be provided as an array of dimples or bumps as shown, preferably in a grid network. Alternatively, the raised portions 26 may take the form of ribs (168, figure 25). The gripping region 22 preferably comprises a layer of a soft material such as a thermoplastic elastomer, which may be provided on a relatively harder support element (36, figure 4). Various types of raised portions and their attachment to the body of the hand tool machine are disclosed. In some embodiments, the soft layer may be attached to the outer surface of the support element (e.g. figures 4, 6 and 8), while in other embodiments, the soft layer may be located on the underside of the support element with the raised portions protruding through said element (figures 15, 17 and 19). Deformation of the raised portions may provide protection against vibrational forces produced by the hand tool machine, which in the preferred embodiment is an eccentric grinder.

Description

19.12.05 ROBERT BOSCH GMBH: D-70442 Stuttgart Hand tool machine

Background art

The invention proceeds from a hand tool machine having a handle region according to the preamble of claim 1.

Hand tool machines are known, which have a handle that for increased grip is provided with a soft grip. This is designed in the form of a uniform coating of a soft material.

Advantages of the invention The invention proceeds from a hand tool machine having a handle region, which comprises a gripping means for applying a hand during operation.

It is proposed that the gripping means comprises a set of raised portions, which are provided for deformation. In this way, a high compliance of the gripping means may be achieved in a material-saving manner. In a particularly advantageous manner an effective vibration damping of the handle region may be achieved during operation in that the raised portions are provided in each case for absorbing vibrational energy. A good grip of the gripping means is moreover achievable, with the result that reliable guidance of the hand tool machine may be achieved. It is further possible to achieve a high resistance of the gripping means to dirt, dust, wear, the effect of hand perspiration etc. The raised portions, which project preferably from a coherent surface, are advantageously manufactured from a soft component. The soft component preferably takes the form of a compound thermoplastic material that comprises a thermoplastic material mixed with additives. For example, the soft component takes the form of TPE (thermoplastic elastorner), TPU (thermoplastic polyurethane) or SEBS. The gripping means is preferably disposed on a support element made of a hard component. In this case, the soft component is preferably manufactured in an adhesive bond with the hard component using a multi-component injection method.

The support element advantageously takes the form of a housing shell of the hand tool machine.

It is moreover proposed that the raised portions are distributed at least predominantly uniformly over the handle region, with the result that comfortable holding is achievable in various hand positions.

A good grip of the gripping means is moreover achievable when the raised portions form a grid network.

In a further form of construction of the invention, it is proposed that the gripping means is disposed on a support element, which has elevated portions that are provided in each case for supporting a raised portion, with the result that a rugged anchoring of the raised portions may be achieved.

It is further proposed that the gripping means comprises a layer of a soft component, which is disposed on a support element and onto which the raised portions are formed. In this way, a rugged coherent gripping means may be achieved.

Alternatively, the raised portions may be each individually attached to the support element.

In a further construction of the invention, it is proposed that the gripping means is disposed on a support element and comprises retaining elements that penetrate the support element, with the result that an advantageous anchoring of the gripping means may be achieved.

It is further proposed that the gripping means is disposed on a support element and the support element has recesses, which form in each case a space provided for deformation of a raised portion. In this way, a particularly high degree of compliance of the raised portions may be achieved. In the event of high pressure loads of the gripping means, because the raised portions penetrate into the recesses a compression of the raised portions that would damage the gripping means may advantageously be prevented.

In a further form of construction of the invention, it is proposed that the gripping means is disposed on a support element and the raised portions project in each case from a recess of the support element. This makes it possible to achieve a low consumption of material for the gripping means and the support element as well as a firm anchoring of the raised portions on the support element.

When the raised portions take the form of ribs, existing simple injection moulding techniques may advantageously be used to manufacture the gripping means.

It is further proposed that the handle region is designed as a hand rest for resting a hand surface in a support direction and the raised portions rise in each case in support direction. In this way, a grip that is predominantly identical over the entire hand rest, also known as "palm grip", may be achieved. Preferably, the raised portions are aligned parallel to one another. In order to achieve an effective adaptation to a hand surface, the hand rest may be designed with a curvature, in particular a curvature corresponding to the shape of the hand surface.

Drawings Further advantages arise from the following description of drawings. The drawings show embodiments of the invention.

The drawings, the description and the claims contain numerous features in combination. The person skilled in the art will consider the features advantageously also individually and combine them into meaningful further combinations.

The drawings show: Fig. 1 an eccentric grinder having a handle region, which comprises a gripping means with deforrnable raised portions, Fig. 2 the eccentric grinder with alternative forms of the raised portions in plan view, Fig. 3 a portion of the handle region of Figure 2 in an enlarged view, Fig. 4 the portion of Figure 3 in a sectional view, Fig. 5 the eccentric grinder with parallel aligned raised portions, Fig. 6 a portion of the handle region having the gripping means of Figure 5, which comprises anchored raised portions, Fig. 7 the eccentric grinder with a gripping means, which comprises raised portions that form a grid network, Fig. B a portion of the handle region having the gripping means of Figure 7, Fig. 9 the eccentric grinder with annular raised portions, Fig. 10 a portion of the handle region having the gripping means of Figure 9, Fig. 11 an alternative gripping means comprising raised portions, which have a trough at their upper end, Fig. 12 the gripping means of Figure 11 on a support element, which has recesses, Fig. 13 the eccentric grinder having raised portions that project from a housing shell, Fig. 14 a portion of the handle region having the gripping means of Figure 13 in plan view, Fig. 15 the portion of Figure 14 in a sectional view, Fig. 16 the underside of the handle region of Figure 13, Fig. 17 a portion of the handle region having anchors of the gripping means that penetrate a support element, Fig. 18 the underside of the handle region having the gripping means of Figure 17, Fig. 19 a portion of the handle region having raised portions that are injected through recesses of a support element, Fig. 20 a portion of the handle region having an alternative gripping means, Fig. 21 a sectional view of the handle region having the gripping means of Figure 20, Fig. 22 a portion of the handle region having raised portions that project from a housing shell, Fig. 23 a sectional view of the handle region having the gripping means of Figure 22, Fig. 24 a further sectional view of the handle region having the gripping means of Figure 22 and Fig. 25 a further orbital grinder with deformable ribs.

Description of the embodiments

Figure 1 shows a hand tool machine in the form of an eccentric grinder 10. It comprises a housing 12, a grinding plate 14 with an abrasive disk 16 disposed thereon, and a connection element 18, to which a dust container may be attached. The eccentric grinder 10 is provided with a handle region 20, which takes the form of a hand rest. This is designed with a curvature corresponding to the shape of a hand surface and comprises a gripping means 22, onto which an operator may place a hand surface in a support direction 24 for guiding the eccentric grinder 10. The gripping means 22, also known as "soft grip", is manufactured from a soft component, such as for example a thermoplastic elastomer (TPE) . In the present embodiment, it takes the form of a coating that is applied on the housing 12 and connected cohesively thereto (see also Figure 4) . On the gripping means 22 a set of raised portions 26 are moreover formed. The raised portions 26 take the form of round knobs. As is evident from the figure, the raised portions 26 are distributed predominantly uniformly over the handle region 20. The raised portions 26 moreover project in each case approximately vertically from an outer surface 28 of the coating. By virtue of the relief-like structure according to the invention of the gripping means 22 it is possible to achieve, compared to conventional, uniformly flat gripping means, a high degree of compliance, a high resistance to dust, dirt, effect of hand perspiration etc. as well as effective vibration damping in a material-saving manner. A good grip may moreover be achieved. In particular, an advantageous support of a hand placed onto the handle region 20 is achievable when this hand is loaded with a reaction torque, e.g. during starting or in the vent of blocking of the eccentric grinder 10.

Figure 2 shows a plan view of the eccentric grinder 10, which is provided with an alternative gripping means 30.

This gripping means 30 comprises raised portions 32a, 32b, 32c, which takes the form of round, square and triangular knobs respectively. Naturally, gripping means are conceivable, which are designed uniformly with square or triangular knobs. Further geometric configurations of raised portions are equally conceivable. By virtue of the choice of any desired geometric shapes and/or colours for the housing 12 and the gripping means 30, the different functions of the housing 12 and the gripping means 30 may be highlighted.

Figure 3 shows an enlarged view of a portion 34 of the handle region 20 of Figure 2. A sectional view of this portion 34 in direction IV-IV (Figure 3) is shown in Figure 4. The gripping means 30 may be seen, which is disposed on a support element 36. The support element 36 takes the form of a housing shell of the housing 12. The gripping means 30 comprises a layer 38 of a soft component, which is applied on the support element 36 and onto which the raised portions 32b are formed. During manufacture of the eccentric grinder 10, the soft component of the gripping means 30 is manufactured in an adhesive bond with the material of the support element 36, a hard component of e.g. polyamide, polypropylene or further materials deemed meaningful by the person skilled in the art. In particular, the gripping means 30 is manufactured with the support element 36 using a two-component injection moulding method.

Further gripping means according to the invention are presented by way of this description of the example of an eccentric grinder 10. Naturally, it is conceivable to use these gripping means according to the invention in further hand tool machines, which during operation are guided by hand. Furthermore, the gripping means described here by way of the example of a handle region in the form of a hand rest are naturally usable with further designs of handle region, such as bow-type, spade-type, pistol-type or pommel-type handles.

Figures 5 to 12 illustrate further embodiments of gripping means of the handle region 20. These gripping means are designed, as described above with reference to Figures 1 to 4, in each case as a coating of a soft component that is applied on a housing shell of the housing 12 and comprises a set of deformable raised portions.

Figure 5 shows the eccentric grinder 10, which is provided in the handle region 20 with an alternative gripping means 40. This comprises a set of rectangular raised portions 42. In Figure 6 a portion of the handle region 20 is shown in a sectional view. The gripping means 40 comprises a layer 44 of a soft component, which is applied on a support element 46 and onto which the raised portions 42 are formed. The support element 46, which is designed as an alternative housing shell of the housing 12, for anchoring the raised portions 42 has a set of elevated portions 48, on each of which one of the raised portions 42 is supported. These raised portions 42 rise in each case in support direction 24 and are aligned parallel to one another. They have in each case lateral faces 50.1, 50.2 that are aligned at least predominantly parallel to the support direction 24. By means of this selected alignment of the raised portions 42 it is possible to achieve a homogeneous grip of the gripping means 40 over the entire handle region 20. In particular, it is possible to achieve a high degree of grip of the raised portions 42 that are disposed on a flank 52 of the handle region 20.

Figure 7 shows a plan view of the eccentric grinder 10, wherein the handle region 20 is provided with an alternative gripping means 54. The gripping means 54 comprises raised portions 56, wherein these raised portions 56 take the form of connecting webs of a grid network. Figure 8 shows in a sectional view in a direction Vill-Vill (Figure 7) a portion of the handle region 20 having the gripping means 54. The gripping means 54 comprises a layer 58 of a soft component, which is applied on a support element 60 and onto which the raised portions 56 in the form of connecting webs are formed. The support element 60 once again takes the form of a housing shell of the housing 12. In this embodiment, the raised portions 56 take the form of straight connecting webs and therefore form rectangular recesses 62 (Figure 7) Further forms of construction of a grid network are conceivable, wherein the connecting webs of the grid network are of a curved design and therefore form e.g. circular or elliptical recesses.

Figure 9 shows the eccentric grinder 10, which is provided with an alternative gripping means 64. This comprises annular raised portions 66. A portion of the handle region 20 having the gripping means 64 is shown in a sectional view in Figure 10. The gripping means 64 comprises a layer 68 of a soft component, which is applied on the support element 60 and onto which the annular raised portions 66 are formed. The gripping means 64 having the raised portions 66 is manufactured by an injection moulding method with the aid of an injection moulding tool, On completion of the injection moulding operation, the injection moulding tool is separated from the gripping means 64. Thanks to the low accumulation of material in the region of the annuli, the gripping means 64 may be released particularly easily from the injection moulding tool, without the raised portions 66 being torn during removal of the injection moulding tool.

A further form of construction of a gripping means 70 may be seen in Figure 11. This shows a plan view of a portion of the handle region 20 provided with the gripping means 70. The gripping means 70 is provided with raised portions 72, which have in each case at their upper end a trough 74.

The portion is illustrated in Figure 12 in a sectional view along a direction XII-XII (Figure 11) . The gripping means 70 comprises a layer 76 of a soft component, which is applied on a support element 78 and onto which the raised portions 72 are formed. The support element 78 once again takes the form of an alternative housing shell of the housing 12 and has a set of recesses 80, which are associated in each case with a raised portion 72 of the gripping means 70. The recesses 80, which extend in each case in support direction 24, form in each case a space 82 that is provided for deformation of one of the raised portions 72. In the event of high pressure loading of the raised portions 72, these may penetrate in each case into one of the recesses 80 of the support element 78, so that a complete compression of the raised portion 72 and hence damage to the gripping means 70 may be prevented. The gripping means 70 having the raised portions 72 is manufactured by an injection moulding method with the aid of an injection moulding tool. On completion of the injection moulding operation, the injection moulding tool is removed from the finished gripping means 70 in a tool opening direction 84. In this case, the raised portions 72 may deform and penetrate into the recesses 80 of the support element 78, with the result that a tearing of the raised portions 72 during the removal movement of the injection moulding tool may be prevented. In a particularly advantageous manner, this allows the raised portions 72 to be designed with a height H uniformly over the entire handle region 20, wherein a trouble-free release from the mould in tool opening direction 84 after injection moulding of the gripping means 70 may nevertheless be achieved. Furthermore, from each of the raised portions 72 a space 86 is cut out, which is designed as a continuation of the space 82 formed by one of the recesses 80.

Figure 13 shows the eccentric grinder 10, which has a further form of construction of a gripping means 88. This is likewise manufactured from a soft component and comprises a set of raised portions 90. In this construction, the raised portions 90 project from a support element 92. This support element 92 is formed by an alternative housing shell of the housing 12 and has an outer surface 94 that is visible to an operator in the handle region 20. Figure 14 shows a portion of the handle region 20 having the support element 92 and the raised portions 90 projecting from the outer surface 94 in a plan view. This portion is illustrated in a sectional view along a direction XV-XV in Figure 15. The gripping means 88 comprises a layer 96 of the soft component, which is attached to an inner surface 98 of the support element 92. Formed onto the layer 96 are portions 100, which are disposed in recesses 101 of the support element 92 and penetrate the support element 92. The portions 100 continue in each case in the form of one of the raised portions 90 that project from the outer surface 94 of the support element 92. The raised portions 90 have in each case a continuation 102, which extends parallel to the outer surface 94 and rests against the outer surface 94 and is used to anchor the raised portion 90. During manufacture, the layer 96 is injection moulded onto the inner surface 98 of the housing shell designed as support element 92. This is evident from Figure 16, which shows the inner region of the handle region 20 in a sectional view in direction XVI-XVI (Figure 13) . It is possible to see the support element 92, onto which the layer 96 is injection moulded in the form of a grid network. The portions 100, which continue in the form of the raised portions 90 (not visible in this figure), rise in each case from a nodal point 104 of the grid network and penetrate the support element 92. The hard component forming the support element 92 and the soft component of the gripping means 88 may be dyed different colours to distinguish their function.

A further embodiment of a gripping means 106 takes the form of a variant of the gripping means 54 illustrated in Figure 7 and may be seen in Figure 17. The gripping means 106 comprises raised portions 108, which are likewise designed as straight connecting webs of a grid network. In Figure 17 a portion of the handle region 20 provided with the gripping means 106 is illustrated in a sectional view along a direction XVII-XVII (Figure 7). The gripping means 106 comprises a layer 110 of a soft component, which is applied on a support element 112 and onto which the raised portions 108 are formed. The support element 112 is designed as an alternative housing shell of the housing 12.

Retaining elements 114 are formed onto the layer 110 and penetrate the support element 112. The retaining elements 114 are anchored to the support element 112 by means of two portions 116.1, 116.2, which penetrate into recesses 118.1, 118.2 of the support element 112. Figure 18 shows in an inverted plan view, as in Figure 16, the underside of the handle region 20. The gripping means 106 having the layer 110 and the retaining elements 114 is injection moulded onto the support element 112.

A further embodiment of a gripping means 120 takes the form of a variant of the gripping means 64 illustrated in Figure 9 and is illustrated in Figure 19. The gripping means 120 likewise comprises a set of annular raised portions 122. In Figure 19 a portion of the handle region provided with the gripping means 120 is illustrated in a sectional view. A support element 124 may be seen, which once again is designed as an alternative housing shell of the housing 12 and on which the gripping means 120 is disposed. During manufacture of the gripping means 120, the raised portions 122 are injection moulded from the inner region of the handle region 20 out through recesses 126 of the support element 124. Thus, the raised portions 122 project in each case from one of the recesses 126. For anchoring the soft component on the support element 124, the raised portions 122 in the form of annular rings have an outside diameter D that is set larger than a distance L between the recesses 126. For anchoring the soft component on the support element 124,, the gripping means 120 moreover comprises retaining elements 127 that penetrate the support element 124.

Figures 20 and 21 illustrate a further form of construction of a gripping means 128, which takes the form of a variant of the gripping means 70 shown in Figures 11 and 12.

Figure 20 shows a portion of the handle region 20 provided with the gripping means 128. The gripping means 128 is likewise manufactured from a soft component and comprises a set of raised portions 130 in the form of round knobs. As is evident from Figure 21, which illustrates the handle region 20 in a sectional view in a direction XXI-XXI (Figure 20), the gripping means 128 comprises a layer 132 of the soft component, which is applied on a support element 134 in the form of an alternative housing shell of the housing 12. The raised portions 130 are formed onto this layer 132. The support element 134 has a set of recesses 136, which are associated n each case with a raised portion 130 and form a space 138 provided for deformation of the raised portion 130. As described above with reference to Figure 12, by virtue of the space 138 an easy release of the raised portions 130 front the mould may be achieved after an injection moulding operation. In each of the raised portions 130 a space 140 is moreover cut out, which is designed as a continuation of the space 138.

A further embodiment of a gripping means 142 may be seen in Figures 22 to 24. In Figure 22 the handle region 20 provided with the gripping means 142 is shown in plan view.

The gripping means 142 comprises raised portions 144 of a soft component, which project from an outer surface 146 of a support element 148. The support element 148 likewise takes the form of a housing shell of the housing 12. In Figure 23 a sectional view of the handle region 20 in a direction XXIII-XXIII (Figure 22) is illustrated. The support element 148 has recesses 150, from each of which a raised portion 144 projects. For support of the raised portions 144, they continue in each case into a retaining element 152, which penetrates the support element 148 and is supported against a lateral face 154 of the recess 150.

As is evident from Figure 24, which shows a sectional view of the handle region 20 in direction XXIV-XXIV (Figure 22) for anchoring the gripping means 142 on the support element 148 the retaining element 152 Continues in each case into two retaining elements 156.1, 156.2, which are disposed in channels 158.1, 158.2 of the support element 148. These channels 158.1, 158.2 are cut out of the support element 148 and extend in direction 160 (Figure 22) . The outer surface 146 of the support element 148 is visible to an operator. The hard component forming the support element 148 and the soft component of the gripping means 142 may be dyed different colours to distinguish their function.

Figure 25 shows a further hand tool machine in the form of orbital grinder 162. This has a handle region 164, which is provided with a gripping means 166. The gripping means 166 is manufactured from a soft component and comprises a set of raised portions 168, which are designed in each case as a rib. The gripping means 166 is designed as a coating of the soft component that is applied on a support element 170. The support element 170 is formed by a housing shell of a housing 172. The housing shell comprises two shell halves 174.1, 174.2, which after the release of non-illustrated fastening means are separable from one another in an opening direction 176. After injection moulding of the gripping means 166 the injection moulding tool is removed in opening direction 176 from a housing half, e.g. the shell half 174.1. The raised portions 168 are preferably formed in such a way that the ribs extend in opening direction 176, with the result that a tearing of the raised portions 168 during the removal movement of the injection moulding tool may be prevented. The ribs may, as in the illustrated embodiment, be aligned parallel to the opening direction 176 or they may be aligned slightly obliquely relative to the opening direction 176. In this case, because of the deformability of the ribs a release of the gripping means 166 from the mould may nevertheless be achieved without tearing the raised portions 168.

R. 313462 19. 12.05 ROBERT BOSCH GMBFI; 70442 Stuttgart Reference characters eccentric grinder 54 gripping means 12 housing 56 raised portion 14 grinding plate 58 layer 16 abrasive disk 60 support element 18 connection element 62 recess handle region 64 gripping means 22 gripping means 66 raised portion 24 support direction 68 layer 26 raised portion 70 gripping means 28 outer surface 72 raised portion gripping means 74 trough 32a raised portion 76 layer 32b raised portion 78 support element 32c raised portion 80 recess 34 Portion 82 space 36 support element 84 tool opening direction 38 Layer 86 space gripping means 88 gripping means 42 raised portion 90 raised portion 44 layer 92 support element 46 support element 94 outer surface 48 elevated portion 96 layer 50.1 lateral face 98 inner surface 50.2 lateral face 100 portion 52 flank 101 recess 144 raised portion 102 continuation 146 outer surface 104 nodal point 148 support element 106 gripping means 150 recess 108 raised portion 152 retaining element layer 154 lateral face 112 support element 156.1 retaining element 114 retaining element 156.2 retaining element 116.1 portion 158.1 channel 116.2 portion 158.2 channel 118.1 recess 160 direction 118.2 recess 162 orbital grinder gripping means 164 handle region 122 raised portion 166 gripping means 124 support element 168 raised portion 126 recess 170 support eierrtent 127 retaining element 172 housing 128 gripping means 174.1 shell half raised portion 174.2 shell half 132 layer 176 opening direction 134 support element H height 136 recess D outside diameter 138 space L distance space 142 gripping means

Claims

R. 313462 19.12.05 ROBERT BOSCH GMBH; D-70442 Stuttgart Claims 1. Hand

tool machine having a handle region (20, 164), which comprises a gripping means (22, 30, 40, 54, 64, 70, 88, 106, 120, 128, 142, 166) for applying a hand during operation, characterized in that the gripping means (22, 30, 40, 54, 64, 70, 88, 106, 120, 128, 142, 166) comprises a set of raised portions (26, 32, 42, 56, 66, 72, 90, 108, 122, 130, 144, 168), which are provided for deformation.

2. Hand tool machine according to claim 1, characterized in that the raised portions (26, 32, 42, 56, 66, 72, 90, 108, 122, 130, 144, 168) are distributedat least predominantly uniformly over the handle region (20, 164) 3. Hand tool machine according to claim 1 or 2, characterized in that the raised portions (56, 108) form a grid network.

4. Hand tool machine according to one of the preceding claims, characterized in that the gripping means (40) is disposed on a support element (46), which comprises elevated portions (48) that are provided in each case for supporting a raised portion (42) 5. Hand tool machine according to one of the preceding claims, characterized in that the gripping means (30, 40, 54, 64, 70, 88, 106, 128) comprises a layer (38, 44, 58, 68, 76, 96, 110, 132) of a soft component, which is disposed on a support element (36, 46, 60, 78, 92, 112, 134) and onto which the raised portions (32, 42, 56, 66, 72, 90, 108, 130) are formed.

6. Hand tool machine according to one of the preceding claims, characterized in that the gripping means (106, 120, 142) is disposed on a support element (112, 124, 148) and comprises retaining elements (114, 127, 152) that penetrate the support element (112, 124, 148) 7. Hand tool machine according to one of the preceding claims, characterized in that the gripping means (70, 128) is disposed on a support element (78, 134) and the support element (78, 134) has recesses (80, 136), which form in each case a space (82, 138) that is provided for deformation of a raised portion (72, 130) 8. Hand tool machine according to one of the preceding claims, characterized in that the gripping means (88, 120, 142) is disposed on a support element (92, 124, 148) and the raised portions (90, 122, 144) project in each case from a recess (101, 126, 150) of the support element (92, 124, 148) 9. Hand tool machine according to one of the preceding claims, characterized in that the raised portions (168) take the form of ribs.

10. Hand tool machine according to one of the preceding claims, characterized in that the handle region (20) is designed as a hand rest for resting a hand surface in a support direction (24) and the raised portions (42) rise in each case in support direction (24) 11. A hand too machine substantially as herein described with reference to the accompanying drawings.