GB2518189A - Lumberjack log gym appliance - Google Patents

Abstract

A cylindrical weight gym appliance comprising a cylinder G fitted with wheels W which fit snugly on tracks C, the tracks having safety stops Q and being mounted on beams A, B, wheel guides N, the cylinder mounted on a bar K by circular plates J, the cylinder being protected by a thick rubberised jacket M. The two beams A,B, are supported at one end of the appliance by two hydraulic units H which can be used along with the pivot point Z to set different scrum heights and inclines for the beams. The other ends of the beams are mounted in slots T on a cabinet L which can again be set to different heights. A pulley system and weight stack can be mounted in the cabinet and attached to the cylinder to provide resistance to movement of the cylinder.

Description

The Lumbeijack Log training appliance is a piece of gym equipment that is invented to help train rugby players, basically the forwards, to become more powerful, stronger and fitter to perfonn the task of scrunirnaging. Scrummaging is a part of Rugby Union that occurs in every game, and it is therefore realistic that the players be fit for purpose to carry out this physical task The LOG' trainer can be used by other sportsmen and sportswomen to help improve their physical strength and core power.

When training with the LOU appliance just about every muscle, sinew, tendon and joint are put under stress, and providing that the LOG appliance is used properly and wisely great gains can be made for the athlete. The old adage to TRAIN AND NOT STRAIN holds true fir all gym work.

When srummaging a rugby player assumes an unnatural position of bending over to then put his body and muscles under a tremendous strain and stress. To be able to do this in a rugby match every week he must be fit for purpose so that he does not suffer strains, pulled muscles and sore joints. He therefore has to train at scrummaging on a regular basis otherwise he will be caught out, and make his life uncomfortable during the game, and for days after the match. So it is essential, and wise for him to train on a regular basis to make himself stronger, and more powerful to withstand the rigours and stresses froni partaking in the serum against lbrwards who could be stronger and even better prepared than he is.

Sometimes it is difficult for a player to get a similar forward to match tip to him in training, or for him to be present when the squad is carrying out their serum training on an outdoor serum machine. So the great benefit of the LUMBERJACK LOG as a gym appliance is that it is set up indoors so that the sportsman can report to the gym at his or her own arrangement so that they can get on with their own personal training.

Basically the Lumbe!jack LOU' appliance is a steel cylinder with a steel bar running through the centre that can be loaded on the ends with free weight discs. The cylinder is fitted with two wheels to allow it to run on a pair of tracks. This LOG is pushed forward by the sportsman who is also resisted by a pulley system that raises a number of selected steel plates that weigh approximately ninety-five pounds each. The tracks can be raised slightly at the fir end to create an incline that will give more resistance, and make it more difficult for the person who is training.

The Lumbeijack Log machine is quite large, and needs to be established indoors like other gym appliances so that the person training on it can use the well known Weider Principles of weight training to make the gains he desires to improve his skills and powers as a scruinmager in the modem game of Rugby Union.

I

DRAWING NUMBER ONE.

In the illustrated thawing marked 1 the Ff011 shows the LOG with the cylinder marked G This drawing shows a cylinder [LOGJ with a 6" diameter, but the cylinder LOGS can come in many sizes such as; 6 1/2", 7", 7 1⁄2, 8", 8 1⁄2", 9, 9 /2", 10", or whatever is required. This standard LOG is 4ff wide and intended for one person to train with. Fitted at each end of the LOG is a precision made wheel marked W which has a diameter of 6" and is 5" wide, and these wheels allow the LOG to travel on tracks marked C in Fig! which fit snugly with little tolerance. Each side of the wheel are wheel guides marked N. Attached to the 2" diameter bar that runs through the centre of the LOG are circular plates J that protects the wheels when the bar is being loaded with free weight discs.

The overall length of the bar is eight feet and marked K. The tracks C are fitted on top of two beams A & B, FIGI, which are also 5" wide. The right-hand track is shown in the raised position to make an incline with the dotted profile R, and the pivotal point is Z which can also be positioned further back close to the safety stops Q both these optional points arc marked with the letter P, the pivotal point nearer toQ would give a smoother incline and less demanding on the scrummager, but Z offers a tougher option.

The cylinder itself 0 is protected by a 1" thick, tough and durable, rubberised jacket marked M. Twenlyinch s em the ends of the two beams A&B are predrilled holes marked S in which hurdle of various sizes marked D are placed by fitting E into the holes S. This is for the scrummager to do his neck exercises by using the LOG with free weights. The hurdle sizes valy from 4" up to 12". These hurdles are to train all the neck muscle to strengthen them to a high standard which is required when seruinmaging.

The two beams A&B are supported at the front by two hydraulic units marked 14. These units control the height setting for the scrum position of the LOG This measurement is taken from the track level C to the floor level, and the range for these different serum heights vary froni 30", whith is the lowest, upto 44" which is the highest level.

The letter T shows the slots in the cabinet marked L. These slots allow the two beams A & B to move up and down when the scrum height is adjusted. The cabinet marked L hides the pulley workings, the weight stack and the hydraulic system which will be shown in other drawings.

On the two hydraulic units H can be seen the guides X which stabiises the cylinders H, F shows the hydraulic supply running to the first cylinder H beam A. * DRAWING NUMBER TWO Drawing number 2 has three figures, and on FIGI we can see the rear pulley system M which is attached at that point to the LOU marked L. The letter P denotes a hollow pillar that contains the pulley wheels W, and cable C that runs hack to the weight stack that is not shown. The fixed pulley wheels within P are marked as W The hollow pillar P is of two parts with the upper sleeve moving up and down over the lower part N. When P is extended higher it is shown by the letter E. The upper section of the pillar marked P moves in accordance with the beam B when it is taken up or down by the hydraulic cylinder II simply because it is firmly connected by the adjoining plate marked T. Figure U shows a steel pin and chainmarked with the letter S. Figure 111 shows the make-up of the beam B with its three sections. The two outer sections marked 0 and the inner section marked I which is adhered to the track marked R, and this is shown in the raised position to thnnaninclineanditissecuredinpositionwiththesteelpinS through the three sections of the beam B. The letter F denotes the footplates that are securely bolted to the floor, and X are the guides that stabilises the cylinder H. The two pivotal points for the track hinge to form an incline are displayed with the letter A. The letter C shows the predrilled plate in which S is placed to secure the incline R. K is the buffer stop where the LOG finishes its drive, and J is the adjoining plate for the rear of the beam to be affixed to another hydraulic cylinder which is not shown on this drawin&

S

DRAWING NUMBER THREE. No. 3 This drawing shows the workings of the rear of the beams that keep it level, and in balance with the front end. It shows the hydraulic system marked L that works in unison with the front hydraulic cylinder marked H on drawing 1. It also shows the hydraulic cylinder N which controls the height of the weight stack that keeps the pulley cable at the correct measurement whenever the height of the serum is altered. All hydraulic systems work in unison.

The stacked plates are kept even and in line by the guide poles J when they are lifted and lowered from their resting position. The letter M is a stainless steel bar 1 1⁄4 " in diameter, and shown in more detail in FIG 11, and is hoisted up and lowered by cables C when the LOG is in action.

The rear anchor unit A is securely connected to the beam marked B by the joining plate P. This anchor unit moves freely up and down on the pole marked K and is part of the hydraulic cylinder that is within. The pole K is securely held in position by three uprights marked D and securely capped with a lid U This rear hydraulic unit can be seen in more detail on the drawing No 5.

The hydraulic cylinder N operates a foot marked F that sits under and beneath the fill weighted stack of heavy plates marked E, the two positions of the tbot at its lowest, and also at its highest serum height settings are shown with the dotted lines beneath the weight stack. The guides 0 are for the cylinder N. The range distance that the cylinder N operates is 14" from its lowest serum position at 30" to its highest serum position at 44". Whatever height the serum is set at, the cylinder N will correspond with the rear and front height of the beams so that the pulley system is always at the correct cable tension to remain in unison with the rest of the hydraulic system.

The letters Rand T sbow the position of the track, am! when it is level it is marked T, and the track when it is raised is marked R to create an incline.

The buffer stop to arrest the motion of the LOG is shown as S. FTG 11 shows the stainless steel bar M which is slightly wider than the length of the LO this keeps the pulleysystem in line with the cable C attached to the bar M at points Z and Y. Within this reach are two uniform spaced connecting points both marked V that attaches the bar M to the weight stack E, this can be seen clearer on drawing 7 and 9.

DRAWING NUMBER FOUR No.4.

Drawing 4 illustrates the construction of the LOG based here on a 6" cylinder with a half inch [/2"] thickness of steel and marked F which is made up of three equal sections of 1 g" that are machine threaded to be joined and fitted together to make the length desired which is four foot in this case of illustration. These threaded joints are marked D. The reason the three sections are kept short is to allow for the fitting of star plates C that are welded and then securely screwed into position to be four inches from each end of each short section.

Running through the centre of the cylinder and the star plates is a two inch [2"] steel bar of Olympic standard marked E to which free weight discs can be attached by choice of the scrummager.

Two precision made wheels each at one end of the cylinder are marked W, and they are six inches in diameter and 5" wide to fit the tracks they run upon, shown in drawing I. There are guides B to help keep the wheels stable and safe when in motion. Outside the outer guide B is a circular plate marked which is welded solidly to the bar this is to protectthe wheels W, and the guides B when loading heavy free weight discs onto the outer ends of the bar E. The complete length of the bar E is eight Ibot [8 ft. ] long and equally spaced each end throughout for balance.

The letter A denotes the middle section of the cylinder F which is exactly one third of the overall length IL. Both sections K and M each side of A are exactly the same size, and they are all connected by machines screw threading, and then secured with an outer screw shown in drawing 6.

The cylinder LOG marked F is encased in a one inch thick tough, durable, rubberized coat marked U that keeps it protected, and gives comfort to the trainer when using the LOG F for free weight exercises.

The 2" steel bar E is the centre of the LOU F and the star plates which have a tolerance gap of one point five millimetres to allow the bar being flexed under stress when loaded with heavy weights.

DRAWING NUMBER FIVE No 5.

Drawing 5 is a simple thawing to make the point how the rear end of the beam B is kept level with the front of the beam by the use of a hydraulic cylinder F! that works inside a pole R over which the anchor coupling A slides up and down by the hydraulic system H. The anchor coupling A is securely attached to the beam B by a steel plate P and held in position by bolts with locking nuts marked by the letter L. These bolts are preferred for maintenance reasons rather than welding P into place.

The track situated above and joined to the inner section of the beam B is shown by the letter T, and when the point T is at its highest serum position to the ground marked D, it will record the measurement of 44", and when the beam B and T are at their lowest position which is 30" there is a difference of 14", it therefore means Ci on the drawing is the working distance which is 14" while the distance B is the same as A the coupling, ansi B the beam which is 10". When the bean and the coupling are at rest in its lowest position the remaining distance S is twenty inches {20"].

With time and engineering improvements some of the measurements like the beam B, and the anchor coupling could alter, but the principle will remain the same.

The letter F denotes the footp late for the hydraulic cylinder, and M denotes the hydraulic fluid supply.

DRAWING NUMBER SIX No 6.

This drawing gives a more detailed insight to the star plates mentioned in drawing four 4., and they are fitted by welding K to the interior surface of the cylinder that is the main body of the LOG Their purpose is to give strength and rigidity to the LOG if the 2"steel bar o that runs through the centre of the LOG tends to flex under a heavy load from the free weights that can be loaded onto the ends of the bar.

In FIG II the full I?' thickness of the cylinder can be seen, and the two surfuces, one the interior surface C, and the outer exterior surface marked BareshownonbothFlGl andFIG2.

The outer rim oithe star plate is marked D, and the vanes V that joiathe outer rim and the inner rim E are four in number. The inner rim has a centre hole through which the 2" steel bar U passes, and there is a tolerance of 1:5 millimetres between the two surfaces of the bar U and the star plate. The tolerance is denoted with the letter 1.

Precision steel screws S are drilled and inserted to give added strength, and these are countersunk by 3 millimetres, and sealed with a spot weld w DRAWING NUMBER SEVEN No.7.

Drawing 7 shows the stacked weights unit W, arid how the cable pulley system works to lift the selected weight plates from the main stack.

The math stack rests in a cradle frame marked F, and the pre-selected load to be lifted is operated by the pins marked E inserted into the predrilled holes in the selection plate marked S which is attached to the stainless steel bar B by connector rings R. The stainless steel bar B has upper connecting rings which are connected to the pulley cables C by ring connectors P. Further inside between the connectors P are two ring connectors R pointing downwards which are adjoined to the predrilled plates S. These pre-drilled plates slot through each opening in each weight plate marked T so that they can move right through the weight stack ready for selection.

The letter U denotes the guide poles that run through positioned holes in the stack weights, and these keep the weights extremely steady and stabilised when the weight plates are being lifted or lowered.

The weight plates W are three and a half feet long to fit the four foot LQq and are 8" wide, and 1" thick to give an approximate weight of 95 lbs. for each plate. Therefore a stack of ten plates would offer a weight of 950 lbs., eight plates 7601bs., twelve plates l,l4Olbs., or whatever is required.

One hydraulic cylinder jack H with a wide foot J is positioned in the centre of the stacked plates with the foot J beneath the flill stack of weighted plates, and this foot J moves up and down in accordance with the pre set height of the serum. The letter K points to the footplate of the hydraulic unit which is firmly bolted to the floor, D is also a footplate for the frame F. DRAWING NUMBER EIGHT No.8.

This drawing shows the fitting of a frontal pulley system firmly attached to the front of the LOG L. FIG 1 shows the full working length of the beam B. The LOG marked L is shown sitting on the track K, and 0 is the safety stop at the end of the beamR The frontal pulley wheel A is securely attached to the LOG L by a frame G with the wheel A partially sitting below the level of the LOG L, and the level of the track K, and the beam B, and positioned between the two main beams [other beam riot shown}. This offset angle allows the LOG L to be driven forward without the pulley cable F, the dotted line, becoming a problem by impeding the movement of the LOG L. The dotted line F has shown how the cable E, shown to the right of the plan when stationery, and to the left of the plan, having reached the stop buffer J, after the LOG Li, and the pulley wheel Al has been driven forward.

The same cable marked E is shown running back where it makes its connection to the weight stack, not shown on this drawing. The pulley wheels marked C and 1) move freel5c but remain in a fixed position below the stationery LOG marked L, and X marks the spot where the pulley cable is anchored.

FIG 11 shows the frontal view of the LOG L with its central 2" steel bar marked S nmning through it, and the frontal pulley system marked P attached to the LOG L by its secure fixing marked G while H denotes the primary pulley wheels that are marked A and Al in FIG!. The precision made wheels on each end of the LOG L that travel on the tracks K, shown inFIG I,aredenotedbytheletterWinFIGIi[2j,andMistheflxedplate that protects the wheels whenever the free end of the bar S is being loaded with free weight discs.

DRAWING NUMBER NINE No. 9 This drawing shows the weight stack with one half at rest, and the other half S a raised position.

The weight plates are marked S. and the lower half at rest are seen within the secure frame B. The plates in this case are 3 foot six inches long, eight inches wide, and one inch thick, this gives an approximate weight of 95 lb. for each plate, and these plates fit snugly and smoothly within the frame marked R The upper portion of the weight plates are suspended by the pulley system, and its cables marked C that are attached to a stainless steel bar marked A, and joined with the connecting rings marked D. Further along inside these two points are another pair of ring connectors E facing down that firmly hold the prefixed drilled slender plates marked P that are allowed to run through the stack of plates by slots marked T. The pie-drilled holes allows the athlete to choose the number of plates he desires by inserting a pin [not shown] through the pre-drilled holes R in the plates P. The letter Z denotes the slender guide poles that runs through all the stack plates, and they are securely fixed at the bottom, and the head of the frame [not shown, but seen on drawing ii].

In this drawing two hydraulic cylinders are shown marked H one each side of the weight stack, but one central positioned hydraulic cylinder should be sufficient for this task The protruding feet F from the cylinders H are below and beneath the bottom plate of the weight stack S, and the operating height of the stack S is governed by the hydraulic cylinders H so that the pulley systeni remains leveç and in unison with all the other hydraulic cylinders [not shown]. The letter G denotes the footplates of the cylinders that are firmly bolted to the floot DRAWING NUMBER TEN No. 10.

Drawing number ten shows a layout plan for the hydraulic system that governs the movement of raising and lowering the selected serum height of both main beams, and the weight stack so that they all remain level and in unison.

The main beams marked A and B show them parallel at the correct width for the LOG to travel upon, and also at their lull length. At the front end marked D are the two pulley uprights I) that each contain two pulley wheels, and these can be seen on drawing 2. There are five hydraulic cylinders all denoted with the letter C, There are two cylinders at the front end, one for each beam A and B seen at the top of the plan, and there are two more hydraulic cylinders C one each at the rear of the beams, and each cylinder is joined securely to the appropriate beam by plates marked L. The weight stack is marked S, and the steel plates that make up the stack are marked W. The fifth hydraulic cylinder C is behind the weight stack, and positioned ia the centre with its foot K protruding underneath the complete stack to control the height of the stack to correspond with the height of the beams, and this foot is marked K. The tank containing the hydraulic fluid is marked T, and the pump marked P with the relief valve R. The hydraulic feed pipe H runs to a flow divider F which has five valve units, and each valve unit has an outlet feed {line] pipe H which gives pressure to each hydraulic cylinder C. The pump marked P creates the pressure that operates the whole hydraulic system.

DRAWING NUMBER ELEVEN No. II.

This drawing gives a fuller illustration of the complete LOG apparatus, and the beam A is shown at its lowest serum position with the weight stack S at rest within the frame J. The LOG L is seen in its start position with the rear pulley system, and pulley section P with its two pulley wheels also at rest. The joining plates Ml is connected to the beam A and also the pulley section P. The other joining plates at the rear of the beam A are marked M2, and joins the beani A to the middle cylimler C that governs the rear height of the beam A. The letter B denotes the stop buffer that arrests the travel of the LOG L when driven forward. The cable E travels back over the pulley wheels W to finally reach the weight stack S where it is connected by a ring coupling through a stainless steel bar marked N. The weight stack S is hgused in a frame marked J. The letter G denotes the slender pole guides that run through the weight plates, and is firmly secured to the floor and the upper section of the frame marked F. The frame F encases, and protects the working parts at the rear of the beams. Sitting firmly in place on top of the frame is a shallow dome marked D for further protection and stability Beneath the dome D at ground level sit the main parts of the hydraulic system with the hydraulic fluid contained in the tank marked T. The hydraulic pump is marked H, the relief valve K, and the flow divider V has five valves one for each hydraulic cylinder C, and can be seen clearer on drawing ten jIO All footplates are securely thstened, and fixed to the floor by bolting.

DRAWING NIJMBERTWELVE No. 12.

This drawing in isolation from the LOU apparatus shows the serum pad gear that is attached to the LOG for the scrunimaging athlete to use when driving the LOG forward.

In the FIG 11 the letter L denotes the steel cylinder, and the LOG itself, and R indicates the tough, durable, rubberised coat that covers the LOG L for protection.

The thick, strong, plastic shroud C is fitted tightly over the coat R to be secured, and positioned so that the frame F carrying the buffer pads P remain vertical.

Also attached to the frame F are two handles marked H one to each pad P, seen better on FIG 1. A stabilising and locking stay marked S shown on FIG 11. helps to support and keep the frame F rigid, and the cowl in position.

The handles marked H are adjustable, and positioned one to each pad marked P. and these handle move up and down, and within the handles H are rubberised grip bars marked B which can rotate to different grip positions. The right-hand buffer pad P is adjustable to move horizontally along a notched bar independent of the frame, and can be moved to the required position selected to give the right, and correct, head gap that the scrunimager needs.

Different sized LOG apparatus would require different sized cowls to get the correct fit